🐛 - zstandardios Remove synced zstd script phase races the compiler intermittent Build input file cannot be found failures

[cecharlier]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Zstandard, Zstandard iOS

Which platforms are affected?

iOS

Description

ios/zstandard_ios.podspec (v1.5.0) defines two build-time script phases:

1. Sync zstd — copies the zstd C sources into Classes/zstd/ (:execution_position => :before_headers)
2. Remove synced zstd — rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd" with :execution_position => :any

Because the removal phase uses :any and declares no input/output files, Xcode's parallel build system is free to schedule it before or during compilation of the very sources it deletes.

Expected: iOS builds succeed deterministically.

Actual: builds fail intermittently with Build input file cannot be found for zstd C sources (compress/zstdmt_compress.c, legacy/zstd_v06.c, legacy/zstd_v07.c), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: PODS_TARGET_SRCROOT resolves (through Flutter's .symlinks) into the user's pub cache, so this phase deletes files from ~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ — mutating the shared package cache on every build.

Suggested fix: delete the Remove synced zstd script phase. The Sync zstd phase plus the prepare_command already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running pod install makes builds deterministic.

Reproducing the issue

1. Add zstandard: 1.5.0 to a Flutter app.
2. Run flutter build ios --simulator --debug repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

Flutter Version

3.44.5

Relevant Log Output

Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.

Flutter dependencies

Expand Flutter dependencies snippet

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's :execution_position => :any lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

[vypbot]

🪄 Automatic Actions

1. The issue was assigned to @efraespada.
2. The issue's title was updated from zstandard_ios: "Remove synced zstd" script phase races the compiler → intermittent "Build input file cannot be found" failures to 🐛 - zstandardios Remove synced zstd script phase races the compiler intermittent Build input file cannot be found failures.
3. The issue was linked to vypdev and moved to the column Todo.
4. Priority set to P0 in vypdev.
5. Recommended steps (OpenCode Plan agent):
6. No response.

Debug log

[DEBUG] Setup done. Issue number: 143, isSingleAction: false, isIssue: true, isPullRequest: false, isPush: false
[DEBUG] ✅ No previous runs active. Continuing...
[INFO] Running IssueUseCase for issue #143.
[INFO] 📋 Executing IssueUseCase.
[INFO] 🔐 Executing CheckPermissionsUseCase.
[DEBUG] Ignoring permission checking. Issue doesn't require mandatory branch.
[INFO] 👤 Executing AssignMemberToIssueUseCase.
[DEBUG] #143 needs 1 assignees.
[DEBUG] Checking team: tatooine
[DEBUG] Members: 2
[INFO] ✏️ Executing UpdateTitleUseCase.
[DEBUG] Issue title updated to: 🐛 - zstandardios Remove synced zstd script phase races the compiler intermittent Build input file cannot be found failures
[INFO] 🏷️ Executing UpdateIssueTypeUseCase.
[DEBUG] Setting issue type for issue 143 to Bug
[DEBUG] Creating new issue type "Bug" for organization vypdev...
[DEBUG] Issue Type: Bug
[DEBUG] Issue Type Description: An issue indicating a defect, error, or malfunction that needs to be investigated and fixed.
[DEBUG] Issue Type Color: orange
[DEBUG] Fetched issue ID: I_kwDONFe3188AAAABN4AfGA
[DEBUG] Organization ID: MDEyOk9yZ2FuaXphdGlvbjYzNzA1NDAz
[DEBUG] Organization issue types: [{"id":"IT_kwDOA8wRO84AuWac","name":"Task"},{"id":"IT_kwDOA8wRO84AuWag","name":"Bug"},{"id":"IT_kwDOA8wRO84AuWak","name":"Feature"},{"id":"IT_kwDOA8wRO84Bw9l2","name":"Documentation"},{"id":"IT_kwDOA8wRO84Bw9mw","name":"Question"},{"id":"IT_kwDOA8wRO84Bw9oA","name":"Maintenance"},{"id":"IT_kwDOA8wRO84Bw90_","name":"Release"},{"id":"IT_kwDOA8wRO84Bxfgg","name":"Hotfix"},{"id":"IT_kwDOA8wRO84Bxfgh","name":"Help"}]
[DEBUG] Found existing issue type "Bug" with ID: IT_kwDOA8wRO84AuWag
[DEBUG] Successfully updated issue type to Bug
[INFO] 🔗 Executing LinkIssueProjectUseCase.
[DEBUG] Fetched issue ID: I_kwDONFe3188AAAABN4AfGA
[DEBUG] Linked I_kwDONFe3188AAAABN4AfGA with id PVTI_lADOA8wRO84Ajh7Bzg3ozrc to project PVT_kwDOA8wRO84Ajh7B
[DEBUG] Content ID: PVTI_lADOA8wRO84Ajh7Bzg3ozrc
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[DEBUG] Target field ID: PVTSSF_lADOA8wRO84Ajh7Bzgb4L2E
[DEBUG] Target option ID: f75ad846
[INFO] 📏 Executing CheckPriorityIssueSizeUseCase.
[DEBUG] Priority: priority: high
[DEBUG] Github Priority Label: P0
[DEBUG] Content ID: PVTI_lADOA8wRO84Ajh7Bzg3ozrc
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[DEBUG] Target field ID: PVTSSF_lADOA8wRO84Ajh7Bzgb4MPQ
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[INFO] 🧹 Executing RemoveIssueBranchesUseCase.
[DEBUG] Checking branch type feature
[DEBUG] Checking prefix feature/143-
[DEBUG] Checking branch type bugfix
[DEBUG] Checking prefix bugfix/143-
[INFO] 🧹 Executing RemoveNotNeededBranchesUseCase.
[INFO] 🏷️ Executing DeployAddedUseCase.
[INFO] 🏷️ Executing DeployedAddedUseCase.
[INFO] 💡 Executing RecommendStepsUseCase.
[DEBUG] RecommendSteps: prompt length=4019, issue description length=3181.
[INFO] 🤖 Recommending steps using OpenCode Plan agent...
[INFO] OpenCode request [agent build] model=opencode/deepseek-v4-flash-free promptLength=4019
[INFO] OpenCode sending prompt (full):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode prompt (full, no truncation):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode message body: agent=build, model=opencode/deepseek-v4-flash-free, parts[0].text length=4019
[DEBUG] OpenCode session create body: {"title":"copilot"}
[DEBUG] OpenCode response [OpenCode session.create] status=200 bodyLength=356. Full body:
{"id":"ses_fd22fbff7ffebn3anNBYx94yYk","slug":"swift-tiger","projectID":"4ac61bfddbc238ba0b5af83ff818f3c45e41faf8","directory":"/home/runner/work/zstandard/zstandard","path":"","cost":0,"tokens":{"input":0,"output":0,"reasoning":0,"cache":{"read":0,"write":0}},"title":"copilot","version":"1.18.21","time":{"created":1787475017736,"updated":1787475017736}}
[DEBUG] OpenCode POST /session/ses_fd22fbff7ffebn3anNBYx94yYk/message body (keys): agent, model, parts (1 part(s))
[INFO] OpenCode: waiting for agent "build" message response (client timeout: 15 min)...
[INFO] OpenCode [agent build] attempt 1/5 failed: OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_a49a9a3d"}}. Retrying in 2000ms...
[INFO] OpenCode request [agent build] model=opencode/deepseek-v4-flash-free promptLength=4019
[INFO] OpenCode sending prompt (full):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode prompt (full, no truncation):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode message body: agent=build, model=opencode/deepseek-v4-flash-free, parts[0].text length=4019
[DEBUG] OpenCode session create body: {"title":"copilot"}
[DEBUG] OpenCode response [OpenCode session.create] status=200 bodyLength=358. Full body:
{"id":"ses_fd22fb5adffeD7tvr05DBB5eU1","slug":"hidden-nebula","projectID":"4ac61bfddbc238ba0b5af83ff818f3c45e41faf8","directory":"/home/runner/work/zstandard/zstandard","path":"","cost":0,"tokens":{"input":0,"output":0,"reasoning":0,"cache":{"read":0,"write":0}},"title":"copilot","version":"1.18.21","time":{"created":1787475020370,"updated":1787475020370}}
[DEBUG] OpenCode POST /session/ses_fd22fb5adffeD7tvr05DBB5eU1/message body (keys): agent, model, parts (1 part(s))
[INFO] OpenCode: waiting for agent "build" message response (client timeout: 15 min)...
[INFO] OpenCode [agent build] attempt 2/5 failed: OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_298a266e"}}. Retrying in 2000ms...
[INFO] OpenCode request [agent build] model=opencode/deepseek-v4-flash-free promptLength=4019
[INFO] OpenCode sending prompt (full):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode prompt (full, no truncation):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode message body: agent=build, model=opencode/deepseek-v4-flash-free, parts[0].text length=4019
[DEBUG] OpenCode session create body: {"title":"copilot"}
[DEBUG] OpenCode response [OpenCode session.create] status=200 bodyLength=358. Full body:
{"id":"ses_fd22fadb2ffet77fSrivyXzJSa","slug":"cosmic-engine","projectID":"4ac61bfddbc238ba0b5af83ff818f3c45e41faf8","directory":"/home/runner/work/zstandard/zstandard","path":"","cost":0,"tokens":{"input":0,"output":0,"reasoning":0,"cache":{"read":0,"write":0}},"title":"copilot","version":"1.18.21","time":{"created":1787475022413,"updated":1787475022413}}
[DEBUG] OpenCode POST /session/ses_fd22fadb2ffet77fSrivyXzJSa/message body (keys): agent, model, parts (1 part(s))
[INFO] OpenCode: waiting for agent "build" message response (client timeout: 15 min)...
[INFO] OpenCode [agent build] attempt 3/5 failed: OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_29e5f1a1"}}. Retrying in 2000ms...
[INFO] OpenCode request [agent build] model=opencode/deepseek-v4-flash-free promptLength=4019
[INFO] OpenCode sending prompt (full):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode prompt (full, no truncation):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode message body: agent=build, model=opencode/deepseek-v4-flash-free, parts[0].text length=4019
[DEBUG] OpenCode session create body: {"title":"copilot"}
[DEBUG] OpenCode response [OpenCode session.create] status=200 bodyLength=359. Full body:
{"id":"ses_fd22fa5caffePSDGUcly18KvHo","slug":"swift-mountain","projectID":"4ac61bfddbc238ba0b5af83ff818f3c45e41faf8","directory":"/home/runner/work/zstandard/zstandard","path":"","cost":0,"tokens":{"input":0,"output":0,"reasoning":0,"cache":{"read":0,"write":0}},"title":"copilot","version":"1.18.21","time":{"created":1787475024437,"updated":1787475024437}}
[DEBUG] OpenCode POST /session/ses_fd22fa5caffePSDGUcly18KvHo/message body (keys): agent, model, parts (1 part(s))
[INFO] OpenCode: waiting for agent "build" message response (client timeout: 15 min)...
[INFO] OpenCode [agent build] attempt 4/5 failed: OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_b1ec6b71"}}. Retrying in 2000ms...
[INFO] OpenCode request [agent build] model=opencode/deepseek-v4-flash-free promptLength=4019
[INFO] OpenCode sending prompt (full):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode prompt (full, no truncation):
Based on the following issue description, recommend concrete steps to implement or address this issue. Order the steps logically (e.g. setup, implementation, tests, docs). Keep each step clear and actionable.

**Important – use full project context:** In addition to reading the relevant code (respecting any file ignore patterns specified), read the repository documentation (e.g. README, docs/) and any defined rules or conventions (e.g. .cursor/rules, CONTRIBUTING, project guidelines). This gives you a complete picture of the project and leads to better decisions in both quality of reasoning and efficiency.

**Issue #143 description:**
### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

Zstandard, Zstandard iOS

### Which platforms are affected?

iOS

### Description

`ios/zstandard_ios.podspec` (v1.5.0) defines two build-time script phases:

1. **Sync zstd** — copies the zstd C sources into `Classes/zstd/` (`:execution_position => :before_headers`)
2. **Remove synced zstd** — `rm -rf "${PODS_TARGET_SRCROOT}/Classes/zstd"` with `:execution_position => :any`

Because the removal phase uses `:any` and declares no input/output files, Xcode's parallel build system is free to schedule it **before or during compilation** of the very sources it deletes.

**Expected:** iOS builds succeed deterministically.

**Actual:** builds fail intermittently with `Build input file cannot be found` for zstd C sources (`compress/zstdmt_compress.c`, `legacy/zstd_v06.c`, `legacy/zstd_v07.c`), then succeed on retry with no changes, then fail again. Xcode also warns the phase "will be run during every build because it does not specify any outputs."

Side effect worth flagging: `PODS_TARGET_SRCROOT` resolves (through Flutter's `.symlinks`) into the user's **pub cache**, so this phase deletes files from `~/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/` — mutating the shared package cache on every build.

**Suggested fix:** delete the `Remove synced zstd` script phase. The `Sync zstd` phase plus the `prepare_command` already guarantee the sources exist, and consumers never need them removed at build time. I verified locally that removing the phase and re-running `pod install` makes builds deterministic.

### Reproducing the issue

1. Add `zstandard: 1.5.0` to a Flutter app.
2. Run `flutter build ios --simulator --debug` repeatedly (a clean DerivedData makes the failure more likely).
3. Builds alternate between success and "Build input file cannot be found" for zstd C sources, with no code changes between runs.

### Flutter Version

3.44.5

### Relevant Log Output

shell
Error (Xcode): Build input file cannot be found:
'/Users/<user>/.pub-cache/hosted/pub.dev/zstandard_ios-1.5.0/ios/Classes/zstd/compress/zstdmt_compress.c'.
Did you forget to declare this file as an output of a script phase or custom build rule which produces it?

Also seen for:
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v06.c
.../zstandard_ios-1.5.0/ios/Classes/zstd/legacy/zstd_v07.c

Xcode warning:
Run script build phase '[CP-User] Remove synced zstd' will be run during every build
because it does not specify any outputs.


### Flutter dependencies

<!--- Look below for instructions on how to share your Flutter Dependencies. --->

<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.



</details>


### Additional context and comments

This looks related to the script phases introduced for #127 ("Apple scripts out of packages") — the sync phase works, but the removal phase's `:execution_position => :any` lets Xcode schedule it against the compiler. SPM support is already tracked in #141, so not raising that here.

Provide a numbered list of recommended steps in **markdown** (use headings, lists, code blocks for commands or snippets) so it is easy to read. You can add brief sub-bullets per step if needed.
[DEBUG] OpenCode message body: agent=build, model=opencode/deepseek-v4-flash-free, parts[0].text length=4019
[DEBUG] OpenCode session create body: {"title":"copilot"}
[DEBUG] OpenCode response [OpenCode session.create] status=200 bodyLength=356. Full body:
{"id":"ses_fd22f9ddaffe0Sm90pw0RgIsix","slug":"brave-comet","projectID":"4ac61bfddbc238ba0b5af83ff818f3c45e41faf8","directory":"/home/runner/work/zstandard/zstandard","path":"","cost":0,"tokens":{"input":0,"output":0,"reasoning":0,"cache":{"read":0,"write":0}},"title":"copilot","version":"1.18.21","time":{"created":1787475026469,"updated":1787475026469}}
[DEBUG] OpenCode POST /session/ses_fd22f9ddaffe0Sm90pw0RgIsix/message body (keys): agent, model, parts (1 part(s))
[INFO] OpenCode: waiting for agent "build" message response (client timeout: 15 min)...
[ERROR] OpenCode [agent build] failed after 5 attempts: OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_c713bd71"}}
[ERROR] Error querying OpenCode agent build (opencode/deepseek-v4-flash-free): OpenCode message failed (agent=build): 500 {"name":"UnknownError","data":{"message":"Unexpected server error. Check server logs for details.","ref":"err_c713bd71"}}
[DEBUG] RecommendSteps: OpenCode response received. Steps length=12. Full steps:
No response.
[INFO] Main run finished. Results: 7, total steps: 6.
[INFO] Publishing result: 7 result(s), 6 step(s), 0 error(s).
[INFO] 📄 Executing PublishResultUseCase.

🚀 Happy coding!

^{Made with ❤️ by vypdev/copilot}

[efraespada]

Temporary workaround until the next pub.dev release:

The fix for this issue is now available on the master branch. It removes the Remove synced zstd build phase and keeps the Sync zstd phase, so CocoaPods no longer deletes native sources while Xcode is compiling them.

To consume the fixed iOS package from this repository:

dependency_overrides:
  zstandard_ios:
    git:
      url: https://github.com/vypdev/zstandard.git
      ref: master
      path: zstandard_ios

Keep the default CocoaPods integration enabled. If the application depends on the federated zstandard package, overriding only the root package does not replace its transitive platform package, so zstandard_ios must be overridden explicitly.

Switch back to the published package when the next release is available.