From 74bc4c31718202c64031a59b80495ae1c6825ecd Mon Sep 17 00:00:00 2001
From: ZHU Yuhao <dr.yuhao.zhu@outlook.com>
Date: Wed, 1 Jul 2026 08:10:34 +0200
Subject: [PATCH 1/2] Update the codebase to mojo v1.0.0b2

---
 .github/actions/setup-decimo/action.yml |   8 +-
 .github/workflows/run_tests.yaml        |  34 +++----
 .gitignore                              |   3 +-
 examples/run_bigfloat.sh                |  10 +-
 pixi.lock                               | 116 ++++++++++++------------
 pixi.toml                               |  29 +++---
 src/decimo/bigdecimal/special.mojo      |   5 +
 src/decimo/bigint/special.mojo          |   2 +
 src/decimo/decimal128/decimal128.mojo   |  22 +++--
 tests/bigint/test_bigint_special.mojo   |  23 ++---
 tests/test.sh                           |  18 ++--
 tests/test_cli.sh                       |  16 ++--
 12 files changed, 149 insertions(+), 137 deletions(-)

diff --git a/.github/actions/setup-decimo/action.yml b/.github/actions/setup-decimo/action.yml
index cab5207e..1709a65a 100644
--- a/.github/actions/setup-decimo/action.yml
+++ b/.github/actions/setup-decimo/action.yml
@@ -1,5 +1,5 @@
 name: Setup Decimo with Pixi
-description: Install pixi (cached), activate the Mojo environment, and download the prebuilt decimo.mojopkg artifact into tests/.
+description: Install pixi (cached), activate the Mojo environment, and download the prebuilt decimo.mojoc artifact into tests/.
 
 runs:
   using: composite
@@ -7,11 +7,11 @@ runs:
     - uses: prefix-dev/setup-pixi@v0.9.5
       with:
         activate-environment: true
-    - name: Download decimo.mojopkg artifact
+    - name: Download decimo.mojoc artifact
       uses: actions/download-artifact@v4
       with:
-        name: decimo-mojopkg
+        name: decimo-mojoc
         path: .
     - name: Stage package next to tests
       shell: bash
-      run: cp decimo.mojopkg tests/
+      run: cp decimo.mojoc tests/
diff --git a/.github/workflows/run_tests.yaml b/.github/workflows/run_tests.yaml
index 93db1fe9..ee3a5e57 100644
--- a/.github/workflows/run_tests.yaml
+++ b/.github/workflows/run_tests.yaml
@@ -15,9 +15,9 @@ defaults:
     shell: bash
 
 # The `build` job is the gate: format check, doc generation, and the
-# `decimo.mojopkg` build all run once. The package is uploaded as an
+# `decimo.mojoc` build all run once. The package is uploaded as an
 # artifact so downstream test jobs can download it instead of rebuilding
-# (saves ~30s of `mojo package` per job × 10 jobs). The pixi environment
+# (saves ~30s of `mojo precompile` per job × 10 jobs). The pixi environment
 # is cached by `prefix-dev/setup-pixi@v0.9.5`, so test jobs no longer
 # `curl | sh` and `pixi install` from scratch.
 
@@ -41,7 +41,7 @@ jobs:
         run: |
           for attempt in 1 2 3; do
             echo "=== build attempt $attempt ==="
-            if pixi run mojo package src/decimo; then
+            if pixi run mojo precompile src/decimo; then
               echo "=== build succeeded on attempt $attempt ==="
               break
             fi
@@ -52,13 +52,13 @@ jobs:
             echo "=== build crashed, retrying in 5s... ==="
             sleep 5
           done
-      - name: Stage decimo.mojopkg next to tests
+      - name: Stage decimo.mojoc next to tests
         # `pixi run doc` documents `src/cli/calculator`, which imports
-        # `decimo.*`. Mojo 1.0.0b1 cannot resolve those qualified
+        # `decimo.*`. Mojo cannot resolve those qualified
         # references when re-traversing the source tree via `-I src`,
         # so the doc task uses `-I tests` against the prebuilt
-        # `decimo.mojopkg`. Stage it here before invoking doc.
-        run: cp decimo.mojopkg tests/
+        # `decimo.mojoc`. Stage it here before invoking doc.
+        run: cp decimo.mojoc tests/
       - name: Generate docs (with retry for Mojo compiler intermittent crashes)
         run: |
           for attempt in 1 2 3; do
@@ -74,13 +74,13 @@ jobs:
             echo "=== doc crashed, retrying in 5s... ==="
             sleep 5
           done
-      - name: Verify decimo.mojopkg was produced
-        run: test -f decimo.mojopkg
-      - name: Upload decimo.mojopkg artifact
+      - name: Verify decimo.mojoc was produced
+        run: test -f decimo.mojoc
+      - name: Upload decimo.mojoc artifact
         uses: actions/upload-artifact@v4
         with:
-          name: decimo-mojopkg
-          path: decimo.mojopkg
+          name: decimo-mojoc
+          path: decimo.mojoc
           retention-days: 1
           if-no-files-found: error
 
@@ -287,7 +287,7 @@ jobs:
           done
 
   # ── Test: CLI ────────────────────────────────────────────────────────────────
-  # The CLI test needs a freshly built binary, not the .mojopkg, so we
+  # The CLI test needs a freshly built binary, not the .mojoc, so we
   # invoke `pixi run buildcli` here. Uses cached pixi env (no curl install,
   # no second `pixi install` from scratch).
   test-cli:
@@ -316,13 +316,13 @@ jobs:
             echo "=== build crashed, retrying in 5s... ==="
             sleep 5
           done
-      - name: Stage decimo.mojopkg next to tests
+      - name: Stage decimo.mojoc next to tests
         # `tests/test.sh run_cli` and `run_bigfloat` use `-I tests` to load
-        # the prebuilt `decimo.mojopkg` (Mojo 1.0.0b1's `mojo run/build`
+        # the prebuilt `decimo.mojoc` (Mojo's `mojo run/build`
         # cannot resolve `decimo.X.Y.foo` qualified references when
         # re-traversing source via `-I src`). `pixi run buildcli` produces
-        # the package at `temp/decimo.mojopkg`, so stage a copy here.
-        run: cp temp/decimo.mojopkg tests/
+        # the package at `temp/decimo.mojoc`, so stage a copy here.
+        run: cp temp/decimo.mojoc tests/
       - name: Run tests (with retry for Mojo compiler intermittent crashes)
         run: |
           for attempt in 1 2 3; do
diff --git a/.gitignore b/.gitignore
index d7e46ee4..477b7712 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,8 +10,9 @@
 .magic
 magic.lock
 
-# mojopkg files
+# mojo pre-compiled files
 *.mojopkg
+*.mojoc
 
 # Editor environments
 .vscode
diff --git a/examples/run_bigfloat.sh b/examples/run_bigfloat.sh
index 99d69c0c..b56a481f 100755
--- a/examples/run_bigfloat.sh
+++ b/examples/run_bigfloat.sh
@@ -8,7 +8,7 @@
 #
 # What it does:
 #   1. Ensures the GMP/MPFR C wrapper (libdecimo_gmp_wrapper) is built.
-#   2. Ensures tests/decimo.mojopkg is available (built on demand).
+#   2. Ensures tests/decimo.mojoc is available (built on demand).
 #   3. Builds <file.mojo> with `-I tests`, debug info, and ASSERT=all,
 #      linking against the C wrapper. Output binary goes to temp/<name>.
 #   4. Executes the binary with DYLD_LIBRARY_PATH / LD_LIBRARY_PATH set
@@ -43,10 +43,10 @@ if [[ ! -f "$WRAPPER_LIB" ]]; then
     bash "$WRAPPER_DIR/build_gmp_wrapper.sh"
 fi
 
-# 2. Ensure decimo.mojopkg exists for `-I tests`.
-if [[ ! -f tests/decimo.mojopkg ]]; then
-    echo "==> Building tests/decimo.mojopkg..."
-    pixi run mojo package src/decimo -o tests/decimo.mojopkg
+# 2. Ensure decimo.mojoc exists for `-I tests`.
+if [[ ! -f tests/decimo.mojoc ]]; then
+    echo "==> Building tests/decimo.mojoc..."
+    pixi run mojo precompile src/decimo -o tests/decimo.mojoc
 fi
 
 # 3. Build the user's .mojo file into temp/<basename>.
diff --git a/pixi.lock b/pixi.lock
index d40b3287..c194b808 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -11,7 +11,7 @@ environments:
       linux-64:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/_openmp_mutex-4.5-20_gnu.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/_python_abi3_support-1.0-hd8ed1ab_2.conda
-      - conda: https://repo.prefix.dev/modular-community/linux-64/argmojo-0.6.0-hb0f4dca_0.conda
+      - conda: https://repo.prefix.dev/modular-community/linux-64/argmojo-0.7.0-hb0f4dca_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports-1.0-pyhd8ed1ab_5.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports.tarfile-1.2.0-pyhcf101f3_2.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports.zstd-1.5.0-py314h680f03e_0.conda
@@ -60,11 +60,11 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/libuuid-2.42-h5347b49_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/libzlib-1.3.2-h25fd6f3_2.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/markdown-it-py-4.2.0-pyhd8ed1ab_0.conda
-      - conda: https://conda.modular.com/max/noarch/mblack-26.3.0-release.conda
+      - conda: https://conda.modular.com/max/noarch/mblack-26.4.0-release.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/mdurl-0.1.2-pyhd8ed1ab_1.conda
-      - conda: https://conda.modular.com/max/linux-64/mojo-1.0.0b1-release.conda
-      - conda: https://conda.modular.com/max/linux-64/mojo-compiler-1.0.0b1-release.conda
-      - conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b1-release.conda
+      - conda: https://conda.modular.com/max/linux-64/mojo-1.0.0b2-release.conda
+      - conda: https://conda.modular.com/max/linux-64/mojo-compiler-1.0.0b2-release.conda
+      - conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b2-release.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/more-itertools-11.0.2-pyhcf101f3_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/mypy_extensions-1.1.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/ncurses-6.6-hdb14827_0.conda
@@ -106,7 +106,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/zstd-1.5.7-hb78ec9c_6.conda
       osx-arm64:
       - conda: https://conda.anaconda.org/conda-forge/noarch/_python_abi3_support-1.0-hd8ed1ab_2.conda
-      - conda: https://repo.prefix.dev/modular-community/osx-arm64/argmojo-0.6.0-h60d57d3_0.conda
+      - conda: https://repo.prefix.dev/modular-community/osx-arm64/argmojo-0.7.0-h60d57d3_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports-1.0-pyhd8ed1ab_5.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports.tarfile-1.2.0-pyhcf101f3_2.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/backports.zstd-1.5.0-py314h680f03e_0.conda
@@ -145,11 +145,11 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/libsqlite-3.53.1-h1b79a29_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/libzlib-1.3.2-h8088a28_2.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/markdown-it-py-4.2.0-pyhd8ed1ab_0.conda
-      - conda: https://conda.modular.com/max/noarch/mblack-26.3.0-release.conda
+      - conda: https://conda.modular.com/max/noarch/mblack-26.4.0-release.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/mdurl-0.1.2-pyhd8ed1ab_1.conda
-      - conda: https://conda.modular.com/max/osx-arm64/mojo-1.0.0b1-release.conda
-      - conda: https://conda.modular.com/max/osx-arm64/mojo-compiler-1.0.0b1-release.conda
-      - conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b1-release.conda
+      - conda: https://conda.modular.com/max/osx-arm64/mojo-1.0.0b2-release.conda
+      - conda: https://conda.modular.com/max/osx-arm64/mojo-compiler-1.0.0b2-release.conda
+      - conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b2-release.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/more-itertools-11.0.2-pyhcf101f3_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/mypy_extensions-1.1.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/ncurses-6.6-h1d4f5a5_0.conda
@@ -211,22 +211,22 @@ packages:
   license_family: MIT
   size: 8191
   timestamp: 1744137672556
-- conda: https://repo.prefix.dev/modular-community/linux-64/argmojo-0.6.0-hb0f4dca_0.conda
-  sha256: 55c8077091632b4a012e53a7dbbec4dceac4171503d92cc6372f62e8611900ed
-  md5: 49da259bda4189b4807c8827357e23fe
+- conda: https://repo.prefix.dev/modular-community/linux-64/argmojo-0.7.0-hb0f4dca_0.conda
+  sha256: d1549ec978832a8c6a18454265ac4d89ad69e27967498fd175e6152174c4e6ab
+  md5: bc165382aa8c5dbf6a2c5b6c3d6c40e2
   depends:
-  - mojo-compiler 1.0.0b1.*
+  - mojo-compiler 1.0.0b2.*
   license: Apache-2.0
-  size: 2113584
-  timestamp: 1778610927336
-- conda: https://repo.prefix.dev/modular-community/osx-arm64/argmojo-0.6.0-h60d57d3_0.conda
-  sha256: 4504bc8420f20611cdcebab8280b24681af3921bcc29ad2e197301cc44b28ff2
-  md5: 88c4863e9de3507dba925c4f48a3bd53
+  size: 561359
+  timestamp: 1782868006869
+- conda: https://repo.prefix.dev/modular-community/osx-arm64/argmojo-0.7.0-h60d57d3_0.conda
+  sha256: 602b2b28f33a480aee4fa789cacb2c9abf4e71ee9a73df072bcf3d9da04f2886
+  md5: 0bf4d67c5f332d2ea61d613afd968a15
   depends:
-  - mojo-compiler 1.0.0b1.*
+  - mojo-compiler 1.0.0b2.*
   license: Apache-2.0
-  size: 2112885
-  timestamp: 1778604915940
+  size: 560821
+  timestamp: 1782867689075
 - conda: https://conda.anaconda.org/conda-forge/noarch/backports-1.0-pyhd8ed1ab_5.conda
   sha256: e1c3dc8b5aa6e12145423fed262b4754d70fec601339896b9ccf483178f690a6
   md5: 767d508c1a67e02ae8f50e44cacfadb2
@@ -929,10 +929,10 @@ packages:
   license_family: MIT
   size: 69017
   timestamp: 1778169663339
-- conda: https://conda.modular.com/max/noarch/mblack-26.3.0-release.conda
+- conda: https://conda.modular.com/max/noarch/mblack-26.4.0-release.conda
   noarch: python
-  sha256: c7c36d5b223862acffaaacdfc6f672ca198a046a66f4a956ca57933123fb93b2
-  md5: 63c657fb1780079c3f6cbb7a758a16d2
+  sha256: e2497cbefbf5d962cd0db8c1b893e7e48d8f3603cab84a9d8bad0030b5bb26b1
+  md5: ec6bf2b9588f5ba4bd3472c0773c4892
   depends:
   - python >=3.10
   - click >=8.0.0
@@ -942,8 +942,8 @@ packages:
   - platformdirs >=2
   - tomli >=1.1.0
   license: LicenseRef-Modular-Proprietary
-  size: 135000
-  timestamp: 1777574970629
+  size: 135301
+  timestamp: 1781220755102
 - conda: https://conda.anaconda.org/conda-forge/noarch/mdurl-0.1.2-pyhd8ed1ab_1.conda
   sha256: 78c1bbe1723449c52b7a9df1af2ee5f005209f67e40b6e1d3c7619127c43b1c7
   md5: 592132998493b3ff25fd7479396e8351
@@ -953,53 +953,53 @@ packages:
   license_family: MIT
   size: 14465
   timestamp: 1733255681319
-- conda: https://conda.modular.com/max/linux-64/mojo-1.0.0b1-release.conda
-  sha256: a8f36a83ece187307d7d78c152828eac58edb002d515de2bcbe9f5a19388b70c
-  md5: 11bdf0256d179b89dc00ca4150c6963c
+- conda: https://conda.modular.com/max/linux-64/mojo-1.0.0b2-release.conda
+  sha256: 7553366c138bae2fcf8617582f1bb6d6b6742087bd6a83ea83aa41c023499382
+  md5: 8d4390edde2dcf29880c57b3088f15aa
   depends:
   - python >=3.10
-  - mojo-compiler ==1.0.0b1
-  - mblack ==26.3.0
+  - mojo-compiler ==1.0.0b2
+  - mblack ==26.4.0
   - jupyter_client >=8.6.2,<8.7
   license: LicenseRef-Modular-Proprietary
-  size: 94106548
-  timestamp: 1777595784229
-- conda: https://conda.modular.com/max/osx-arm64/mojo-1.0.0b1-release.conda
-  sha256: 2980b825e3eedb153f68f74edeaae6a7b819912c3eb6e49f1eed7d25f883e050
-  md5: b5f2c6b04a9e2bbe199fef1ea5677014
+  size: 96475709
+  timestamp: 1781237127405
+- conda: https://conda.modular.com/max/osx-arm64/mojo-1.0.0b2-release.conda
+  sha256: 39bb59a309af5e4c78c077263e5824e33bba8159a1e0fc39ff2786a1f9d5762b
+  md5: 1a6b6dd12763032e46b956407b39ab48
   depends:
   - python >=3.10
-  - mojo-compiler ==1.0.0b1
-  - mblack ==26.3.0
+  - mojo-compiler ==1.0.0b2
+  - mblack ==26.4.0
   - jupyter_client >=8.6.2,<8.7
   license: LicenseRef-Modular-Proprietary
-  size: 83375027
-  timestamp: 1777596028766
-- conda: https://conda.modular.com/max/linux-64/mojo-compiler-1.0.0b1-release.conda
-  sha256: 706c7f8e2be740dda8039bf96182b578bfbbd9220ca1a7f762e1f82acc4eb784
-  md5: 2fc6038c3837e50bb855bcf7f930c1c9
+  size: 84573003
+  timestamp: 1781237324882
+- conda: https://conda.modular.com/max/linux-64/mojo-compiler-1.0.0b2-release.conda
+  sha256: 87f8e9ef573f37072423aeb56a7c468bdb5f5889476bce4aa7c3396665c651fe
+  md5: 6be85d17872f5c2370015ca4ec07dd0d
   depends:
-  - mojo-python ==1.0.0b1
+  - mojo-python ==1.0.0b2
   license: LicenseRef-Modular-Proprietary
-  size: 89421276
-  timestamp: 1777595833113
-- conda: https://conda.modular.com/max/osx-arm64/mojo-compiler-1.0.0b1-release.conda
-  sha256: 3e0d6e6e814cb39d14d24234eb8f2ac6524379ea0a9c398a54e77598844e96d6
-  md5: fe08c02512b02563a0b878eeb32a684b
+  size: 85342385
+  timestamp: 1781237127405
+- conda: https://conda.modular.com/max/osx-arm64/mojo-compiler-1.0.0b2-release.conda
+  sha256: 91c4d590a152ec2e26846955fcd7ec02796dfaffefa006a1c0c5790575be2051
+  md5: cd8d3f4a22e5f14dd909d0d5570c4940
   depends:
-  - mojo-python ==1.0.0b1
+  - mojo-python ==1.0.0b2
   license: LicenseRef-Modular-Proprietary
-  size: 67503416
-  timestamp: 1777596016502
-- conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b1-release.conda
+  size: 62655166
+  timestamp: 1781237320083
+- conda: https://conda.modular.com/max/noarch/mojo-python-1.0.0b2-release.conda
   noarch: python
-  sha256: b0554c7705685c86e8a8063bcd11ed58897a498c8e1e19ef045f5ebba2c8874f
-  md5: d0ad2f8ba3758f03bfda84d92bb34b67
+  sha256: 37bf44a74edcd2ebaec7fe8299ef183e006ad051bfcf21caa06becc0e0eeffd5
+  md5: 8781bd673909835fa59ce818e3835839
   depends:
   - python >=3.10
   license: LicenseRef-Modular-Proprietary
-  size: 23114
-  timestamp: 1777594699418
+  size: 24682
+  timestamp: 1781220753246
 - conda: https://conda.anaconda.org/conda-forge/noarch/more-itertools-11.0.2-pyhcf101f3_0.conda
   sha256: 74f7b461e0f0e0709a0c8abb018de9ad885258b74790ffda1e750ac5ddde0a85
   md5: b874955758a30a37c78b82ea5cf78fdb
diff --git a/pixi.toml b/pixi.toml
index 8de97ec2..0fc321f9 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -9,8 +9,8 @@ readme = "README.md"
 version = "0.10.0"
 
 [dependencies]
-argmojo = ">=0.6.0,<0.7" # CLI argument parsing for the Decimo calculator
-mojo = ">=1.0.0b1,<2" # Mojo language compiler and runtime
+argmojo = ">=0.7,<0.8" # CLI argument parsing for the Decimo calculator
+mojo = ">=1.0.0b2,<2" # Mojo language compiler and runtime
 python = ">=3.13" # For Python bindings and tests
 python-build = ">=0.2.0" # Build PyPI wheel (`pixi run wheel`)
 ruff = ">=0.15.0" # Python code formatter
@@ -27,7 +27,7 @@ format = """pixi run mojo format ./src \
 
 # doc
 # Note: the CLI calculator doc step uses `-I tests` (the prebuilt
-# `decimo.mojopkg`) instead of `-I src`. Mojo 1.0.0b1's `mojo doc` cannot
+# `decimo.mojoc`) instead of `-I src`. Mojo's `mojo doc` cannot
 # resolve `decimo.X.Y.foo`-style qualified references when re-traversing
 # the source tree via `-I src`. Loading the pre-built package via
 # `-I tests` sidesteps that regression. The `package` task below is
@@ -40,15 +40,15 @@ p = "clear && pixi run package"
 package = """pixi run format \
 &&pixi run package_decimo \
 &&pixi run doc"""
-package_decimo = """pixi run mojo package src/decimo \
-&&cp decimo.mojopkg tests/ \
-&&cp decimo.mojopkg benches/ \
-&&rm decimo.mojopkg"""
+package_decimo = """pixi run mojo precompile src/decimo -o decimo.mojoc \
+&&cp decimo.mojoc tests/ \
+&&cp decimo.mojoc benches/ \
+&&rm decimo.mojoc"""
 
 # clean the package files in tests folder
 c = "clear && pixi run clean"
-clean = """rm tests/decimo.mojopkg && \
-rm benches/decimo.mojopkg"""
+clean = """rm tests/decimo.mojoc && \
+rm benches/decimo.mojoc"""
 
 # gmp/mpfr wrapper (compile C wrapper — no MPFR needed at build time)
 bgmp = "clear && pixi run buildgmp"
@@ -96,21 +96,21 @@ bcli = "clear && pixi run buildcli"
 # step is needed. We still package decimo into temp/ so the CLI build
 # (and downstream `testcli`) can use `-I temp`.
 buildcli = """mkdir -p temp \
-&& pixi run mojo package src/decimo -o temp/decimo.mojopkg \
+&& pixi run mojo precompile src/decimo -o temp/decimo.mojoc \
 && pixi run mojo build -I temp -I src/cli -o decimo src/cli/main.mojo"""
 # Uncomment the following lines if we build the CLI package with a
 # local clone of argmojo (e.g. when conda argmojo is unavailable):
 # buildcli = """pixi run fetch \
 # && mkdir -p temp \
-# && pixi run mojo package src/decimo -o temp/decimo.mojopkg \
-# && pixi run mojo package temp/argmojo/src/argmojo -o temp/argmojo.mojopkg \
+# && pixi run mojo precompile src/decimo -o temp/decimo.mojoc \
+# && pixi run mojo precompile temp/argmojo/src/argmojo -o temp/argmojo.mojoc \
 # && pixi run mojo build -I temp -I src/cli -o decimo src/cli/main.mojo"""
 tcli = "clear && pixi run test cli"
-testcli = "pixi run buildcli && cp temp/decimo.mojopkg tests/ && bash tests/test.sh cli"
+testcli = "pixi run buildcli && cp temp/decimo.mojoc tests/ && bash tests/test.sh cli"
 
 # python bindings (mojo4py)
 bpy = "clear && pixi run buildpy"
-buildpy = """pixi run mojo package src/decimo -o tests/decimo.mojopkg \
+buildpy = """pixi run mojo precompile src/decimo -o tests/decimo.mojoc \
 && pixi run mojo build python/decimo_module.mojo \
 --emit shared-lib -I tests -o python/src/decimo/_decimo.so"""
 testpy = "pixi run buildpy && pixi run python python/tests/test_decimo.py"
@@ -121,7 +121,6 @@ wheel = "cd python && pixi run python -m build --wheel"
 # All task
 all = """pixi run format \
 &&pixi run package \
-&&pixi run doc \
 &&pixi run test \
 &&pixi run buildcli \
 &&pixi run testcli \
diff --git a/src/decimo/bigdecimal/special.mojo b/src/decimo/bigdecimal/special.mojo
index b122d985..262cdca7 100644
--- a/src/decimo/bigdecimal/special.mojo
+++ b/src/decimo/bigdecimal/special.mojo
@@ -27,6 +27,7 @@ from decimo.errors import ValueError
 # requested precision and the digit count of `n`. Covers the rounding error
 # that accumulates over the `n` intermediate products.
 comptime FACTORIAL_GUARD_DIGITS = 9  # word size
+"""Extra guard digits carried during a rounded `factorial`."""
 
 # Largest argument accepted by `factorial`. Even 10^6 already needs ~10^6
 # multiplications, so anything beyond it is impractical with the simple
@@ -34,6 +35,7 @@ comptime FACTORIAL_GUARD_DIGITS = 9  # word size
 # so an out-of-range argument raises a clear error instead of an `Int`
 # overflow. (A faster algorithm, e.g. binary splitting, could lift this.)
 comptime FACTORIAL_MAX_INPUT = 1_000_000
+"""The largest argument accepted by `factorial` (10^6)."""
 
 
 def factorial(x: BigDecimal, precision: Int = 0) raises -> BigDecimal:
@@ -113,6 +115,9 @@ def product_range(low: Int, high: Int) raises -> BigDecimal:
 
     Returns:
         `low * (low + 1) * ... * high` (1 when the range is empty).
+
+    Raises:
+        Error: Propagated from an intermediate `BigDecimal` multiplication.
     """
     if low > high:
         return BigDecimal(1)
diff --git a/src/decimo/bigint/special.mojo b/src/decimo/bigint/special.mojo
index ac0e3834..5adc4511 100644
--- a/src/decimo/bigint/special.mojo
+++ b/src/decimo/bigint/special.mojo
@@ -30,6 +30,7 @@ from decimo.errors import ValueError
 # so an out-of-range argument raises a clear error instead of an `Int`
 # overflow. (A faster algorithm, e.g. binary splitting, could lift this.)
 comptime FACTORIAL_MAX_INPUT = 1_000_000
+"""The largest argument accepted by `factorial` (10^6)."""
 
 # Below this many factors, `product_range` stops splitting and accumulates the
 # consecutive factors with in-place single-word multiplies instead. That avoids
@@ -37,6 +38,7 @@ comptime FACTORIAL_MAX_INPUT = 1_000_000
 # products near the bottom of the recursion. Measured ~1.1x (large n) to ~4x
 # (small n) faster than splitting all the way down.
 comptime PRODUCT_RANGE_LEAF_CUTOFF = 32
+"""Maximum factors in a `product_range` leaf before it binary-splits."""
 
 
 def factorial(x: BigInt) raises -> BigInt:
diff --git a/src/decimo/decimal128/decimal128.mojo b/src/decimo/decimal128/decimal128.mojo
index 565ccd9a..dfb4dfa2 100644
--- a/src/decimo/decimal128/decimal128.mojo
+++ b/src/decimo/decimal128/decimal128.mojo
@@ -23,7 +23,7 @@ operation dunders, and other dunders that implement traits, as well as
 mathematical methods that do not implement a trait.
 """
 
-from std.memory import UnsafePointer
+from std.memory import Span, UnsafePointer
 from std.hashlib.hasher import Hasher
 
 import decimo.decimal128.arithmetics as decimal128_arithmetics
@@ -1136,8 +1136,9 @@ struct Decimal128(
         if scale == 0:
             writer.write(
                 StringSlice(
-                    ptr=buf.unsafe_ptr() + pos,
-                    length=n_digits,
+                    unsafe_from_utf8=Span(
+                        ptr=buf.unsafe_ptr() + pos, length=n_digits
+                    )
                 )
             )
         elif scale >= n_digits:
@@ -1154,23 +1155,26 @@ struct Decimal128(
             writer.write("0.")
             writer.write(
                 StringSlice(
-                    ptr=buf.unsafe_ptr() + frac_start,
-                    length=scale,
+                    unsafe_from_utf8=Span(
+                        ptr=buf.unsafe_ptr() + frac_start, length=scale
+                    )
                 )
             )
         else:
             var int_len = n_digits - scale
             writer.write(
                 StringSlice(
-                    ptr=buf.unsafe_ptr() + pos,
-                    length=int_len,
+                    unsafe_from_utf8=Span(
+                        ptr=buf.unsafe_ptr() + pos, length=int_len
+                    )
                 )
             )
             writer.write(".")
             writer.write(
                 StringSlice(
-                    ptr=buf.unsafe_ptr() + pos + int_len,
-                    length=scale,
+                    unsafe_from_utf8=Span(
+                        ptr=buf.unsafe_ptr() + pos + int_len, length=scale
+                    )
                 )
             )
 
diff --git a/tests/bigint/test_bigint_special.mojo b/tests/bigint/test_bigint_special.mojo
index 57de5a9f..606d4319 100644
--- a/tests/bigint/test_bigint_special.mojo
+++ b/tests/bigint/test_bigint_special.mojo
@@ -9,7 +9,7 @@ from decimo.bigint.special import product_range
 
 
 def test_factorial_basic() raises:
-    """Test factorial of small non-negative integers."""
+    """Tests factorial of small non-negative integers."""
     testing.assert_equal(String(BigInt(0).factorial()), "1")
     testing.assert_equal(String(BigInt(1).factorial()), "1")
     testing.assert_equal(String(BigInt(2).factorial()), "2")
@@ -19,14 +19,14 @@ def test_factorial_basic() raises:
 
 
 def test_factorial_large() raises:
-    """Test factorial that exceeds 64-bit range."""
+    """Tests factorial that exceeds 64-bit range."""
     testing.assert_equal(
         String(BigInt(25).factorial()), "15511210043330985984000000"
     )
 
 
 def test_factorial_crosses_leaf_cutoff() raises:
-    """Test factorial large enough to exercise the binary-split branch."""
+    """Tests factorial large enough to exercise the binary-split branch."""
     # 40 > the 32-factor leaf cutoff, so this splits and recombines.
     testing.assert_equal(
         String(BigInt(40).factorial()),
@@ -35,7 +35,7 @@ def test_factorial_crosses_leaf_cutoff() raises:
 
 
 def test_factorial_negative_raises() raises:
-    """Test that a negative argument raises."""
+    """Tests that a negative argument raises."""
     var raised = False
     try:
         _ = BigInt(-1).factorial()
@@ -45,7 +45,7 @@ def test_factorial_negative_raises() raises:
 
 
 def test_factorial_too_large_raises() raises:
-    """Test that an argument above the cap raises."""
+    """Tests that an argument above the cap raises."""
     var raised = False
     try:
         _ = BigInt(2_000_000).factorial()  # above the 10^6 cap
@@ -55,7 +55,7 @@ def test_factorial_too_large_raises() raises:
 
 
 def test_permutation() raises:
-    """Test permutation P(n, k)."""
+    """Tests permutation P(n, k)."""
     testing.assert_equal(String(BigInt(10).permutation(3)), "720")
     testing.assert_equal(String(BigInt(5).permutation(5)), "120")  # P(n,n)=n!
     testing.assert_equal(String(BigInt(5).permutation(0)), "1")
@@ -64,7 +64,7 @@ def test_permutation() raises:
 
 
 def test_permutation_negative_k_raises() raises:
-    """Test that a negative k raises."""
+    """Tests that a negative k raises."""
     var raised = False
     try:
         _ = BigInt(5).permutation(-1)
@@ -74,13 +74,13 @@ def test_permutation_negative_k_raises() raises:
 
 
 def test_permutation_large_n() raises:
-    """Test permutation with a large n that still fits in one word."""
+    """Tests permutation with a large n that still fits in one word."""
     # n = 70000 (< 2^32), k = 2 -> 70000 * 69999.
     testing.assert_equal(String(BigInt(70000).permutation(2)), "4899930000")
 
 
 def test_permutation_n_too_large_raises() raises:
-    """Test that an n above 2^32 - 1 raises."""
+    """Tests that an n above 2^32 - 1 raises."""
     var raised = False
     try:
         _ = BigInt(4_294_967_296).permutation(2)  # 2^32, above WORD_MAX
@@ -90,7 +90,7 @@ def test_permutation_n_too_large_raises() raises:
 
 
 def test_multiply_by_word_inplace_zero_and_one() raises:
-    """word == 1 is a no-op; word == 0 yields a canonical zero."""
+    """Tests that word == 1 is a no-op; word == 0 yields a canonical zero."""
     var x = BigInt(12345)
     multiply_by_word_inplace(x, 1)
     testing.assert_equal(String(x), "12345")
@@ -109,7 +109,8 @@ def test_multiply_by_word_inplace_preserves_sign() raises:
 
 
 def test_product_range_out_of_bounds_raises() raises:
-    """product_range rejects bounds that don't fit in a single word."""
+    """Tests that product_range rejects bounds that don't fit in a single word.
+    """
     var raised = False
     try:
         _ = product_range(1, 4_294_967_296)  # high = 2^32 > WORD_MAX
diff --git a/tests/test.sh b/tests/test.sh
index fa056f27..0c6a939a 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -29,19 +29,19 @@ set -eo pipefail
 REPO_ROOT=$(cd "$(dirname "$0")/.." && pwd)
 cd "$REPO_ROOT"
 
-# ── Preflight: ensure tests/decimo.mojopkg exists ───────────────────────────
+# ── Preflight: ensure tests/decimo.mojoc exists ─────────────────────────────
 # All Mojo test invocations below use `-I tests` to pick up the prebuilt
-# `decimo.mojopkg` (Mojo 1.0.0b1's `mojo run` cannot resolve
-# `decimo.X.Y.foo` qualified references when re-traversing source via
-# `-I src`). On a fresh checkout the package may not exist yet, so build
-# it on demand. CI normally stages a prebuilt artifact via the
-# `setup-decimo` action, in which case this is a no-op.
+# `decimo.mojoc` (`mojo run` cannot resolve `decimo.X.Y.foo` qualified
+# references when re-traversing source via `-I src`). On a fresh checkout the
+# package may not exist yet, so build it on demand. CI normally stages a
+# prebuilt artifact via the `setup-decimo` action, in which case this is a
+# no-op.
 ensure_decimo_mojopkg() {
-    if [[ -f tests/decimo.mojopkg ]]; then
+    if [[ -f tests/decimo.mojoc ]]; then
         return 0
     fi
-    echo "tests/decimo.mojopkg not found; building it now..."
-    pixi run mojo package src/decimo -o tests/decimo.mojopkg
+    echo "tests/decimo.mojoc not found; building it now..."
+    pixi run mojo precompile src/decimo -o tests/decimo.mojoc
 }
 
 # ── Suite definitions ────────────────────────────────────────────────────────
diff --git a/tests/test_cli.sh b/tests/test_cli.sh
index 760ff180..1dbd7b41 100644
--- a/tests/test_cli.sh
+++ b/tests/test_cli.sh
@@ -6,14 +6,14 @@ set -e  # Exit immediately if any command fails
 REPO_ROOT=$(cd "$(dirname "$0")/.." && pwd)
 cd "$REPO_ROOT"
 
-# ── Preflight: ensure tests/decimo.mojopkg exists ───────────────────────────
-# CLI unit tests use `-I tests` to pick up the prebuilt `decimo.mojopkg`
-# (Mojo 1.0.0b1's `mojo run` cannot resolve `decimo.X.Y.foo` qualified
-# references when re-traversing source via `-I src`). On a fresh checkout
-# the package may not exist yet, so build it on demand.
-if [[ ! -f tests/decimo.mojopkg ]]; then
-    echo "tests/decimo.mojopkg not found; building it now..."
-    pixi run mojo package src/decimo -o tests/decimo.mojopkg
+# ── Preflight: ensure tests/decimo.mojoc exists ─────────────────────────────
+# CLI unit tests use `-I tests` to pick up the prebuilt `decimo.mojoc`
+# (`mojo run` cannot resolve `decimo.X.Y.foo` qualified references when
+# re-traversing source via `-I src`). On a fresh checkout the package may
+# not exist yet, so build it on demand.
+if [[ ! -f tests/decimo.mojoc ]]; then
+    echo "tests/decimo.mojoc not found; building it now..."
+    pixi run mojo precompile src/decimo -o tests/decimo.mojoc
 fi
 
 # ── Unit tests ─────────────────────────────────────────────────────────────

From 44cb953f85b8f5c9aaf9cd95ba06e7dfc78e8633 Mon Sep 17 00:00:00 2001
From: ZHU Yuhao <dr.yuhao.zhu@outlook.com>
Date: Wed, 1 Jul 2026 19:44:05 +0200
Subject: [PATCH 2/2] Address comments

---
 .github/workflows/run_tests.yaml      | 2 +-
 docs/changelog.md                     | 6 ++++++
 docs/plans/gmp_integration.md         | 6 +++---
 docs/plans/mojo4py.md                 | 6 +++---
 docs/readme_unreleased.md             | 6 +++---
 src/decimo/decimal128/utility.mojo    | 2 +-
 tests/bigint/test_bigint_special.mojo | 3 +--
 tests/test.sh                         | 8 ++++----
 8 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/run_tests.yaml b/.github/workflows/run_tests.yaml
index ee3a5e57..cb1055fc 100644
--- a/.github/workflows/run_tests.yaml
+++ b/.github/workflows/run_tests.yaml
@@ -41,7 +41,7 @@ jobs:
         run: |
           for attempt in 1 2 3; do
             echo "=== build attempt $attempt ==="
-            if pixi run mojo precompile src/decimo; then
+            if pixi run mojo precompile src/decimo -o decimo.mojoc; then
               echo "=== build succeeded on attempt $attempt ==="
               break
             fi
diff --git a/docs/changelog.md b/docs/changelog.md
index 6b2a2ccc..04faf1c0 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -4,6 +4,12 @@ This is a list of changes for the Decimo package (formerly DeciMojo).
 
 ## Unreleased
 
+1. **Migrated the codebase to Mojo v1.0.0b2.** Bumped the Pixi `mojo`
+   dependency to `>=1.0.0b2` and `argmojo` to `0.7.0`. Switched packaging
+   from the deprecated `mojo package` / `.mojopkg` to `mojo precompile` /
+   `.mojoc` across Pixi tasks, CI workflows, and helper scripts, and
+   updated the `Decimal128` string formatter to the
+   `StringSlice(unsafe_from_utf8=Span(...))` constructor (PR #257).
 1. **Renamed `BigDecimal` rounding APIs to `*_inplace`.**
    The free function `decimo.bigdecimal.rounding.round_to_precision` and
    the `BigDecimal.round_to_precision` method were renamed to
diff --git a/docs/plans/gmp_integration.md b/docs/plans/gmp_integration.md
index 591f4034..fe1af9ff 100644
--- a/docs/plans/gmp_integration.md
+++ b/docs/plans/gmp_integration.md
@@ -813,8 +813,8 @@ Link against whichever is present. The stub library lets Decimo compile and run
 
 **Phase 1 (immediate)**: Use **Option A** — compile-time feature flag. Build two package variants:
 
-- `decimo.mojopkg` — native only (default)
-- `decimo_gmp.mojopkg` — with GMP backend
+- `decimo.mojoc` — native only (default)
+- `decimo_gmp.mojoc` — with GMP backend
 
 **Phase 2 (when Mojo matures)**: Migrate to **Option B** with `DLHandle` when available, enabling true runtime detection.
 
@@ -1132,7 +1132,7 @@ build-gmp-wrapper = """
 
 package-with-gmp = { depends-on = ["build-gmp-wrapper"] }
 package-with-gmp.cmd = """
-    mojo package src/decimo -o decimo.mojopkg && \
+    mojo precompile src/decimo -o decimo.mojoc && \
     cp src/decimo/gmp/libgmp_wrapper.dylib .
 """
 ```
diff --git a/docs/plans/mojo4py.md b/docs/plans/mojo4py.md
index 52930918..8279da25 100644
--- a/docs/plans/mojo4py.md
+++ b/docs/plans/mojo4py.md
@@ -12,7 +12,7 @@
 
 Modular has introduced a beta mechanism that allows Mojo code to be exposed as a standard CPython extension module (`.so` / `.dylib`). This means a Python user can write `import decimo` and get access to Mojo-native `Decimal128`, `BigDecimal`, `BigInt`, and `BigUint` types at near-native speed, without rewriting anything in Python.
 
-**Feasibility verdict: Possible but non-trivial.** The main (no surprise) blocker is that decimo is a *packaged* Mojo library (`.mojopkg`), not a single `.mojo` file. The Mojo importer hook (the easy dev-time path) does not support custom import paths for non-stdlib Mojo packages. The `.so` build path (the distribution path) works fine. This means the developer workflow is slightly more manual, but distribution is fully viable.
+**Feasibility verdict: Possible but non-trivial.** The main (no surprise) blocker is that decimo is a *packaged* Mojo library (`.mojoc`), not a single `.mojo` file. The Mojo importer hook (the easy dev-time path) does not support custom import paths for non-stdlib Mojo packages. The `.so` build path (the distribution path) works fine. This means the developer workflow is slightly more manual, but distribution is fully viable.
 
 ---
 
@@ -25,7 +25,7 @@ Modular has introduced a beta mechanism that allows Mojo code to be exposed as a
 | **Source import hook** | `import mojo.importer` in Python, then `import mojo_module` (auto-compiles `.mojo` → `.so` into `__mojocache__/`) | Dev prototyping with single-file modules only |
 | **Pre-built `.so`**    | `mojo build mojo_module.mojo --emit shared-lib -o mojo_module.so`                                                 | Production, packages with dependencies, CI/CD |
 
-For decimo, **only the pre-built `.so` path is viable** because the binding code will `import decimo` (the `.mojopkg`), and the importer hook cannot resolve that path.
+For decimo, **only the pre-built `.so` path is viable** because the binding code will `import decimo` (the `.mojoc`), and the importer hook cannot resolve that path.
 
 ### 2.2 The Binding Pattern
 
@@ -183,7 +183,7 @@ tpy     = "clear && pixi run testpy"
 wheel   = "cd python && pixi run python -m build --wheel"
 ```
 
-- `pixi run buildpy` — compiles the Mojo binding directly into the installable package at `python/src/decimo/_decimo.so`. No need to pre-package `decimo.mojopkg`; the `-I src` flag resolves `import decimo` to `src/decimo/`.
+- `pixi run buildpy` — compiles the Mojo binding directly into the installable package at `python/src/decimo/_decimo.so`. No need to pre-package `decimo.mojoc`; the `-I src` flag resolves `import decimo` to `src/decimo/`.
 - `pixi run testpy` — builds then runs the Python test suite.
 - `pixi run wheel` — produces a pure-Python placeholder wheel in `python/dist/` (no `.so` included); suitable for PyPI name reservation.
 
diff --git a/docs/readme_unreleased.md b/docs/readme_unreleased.md
index 73e491a3..58dec955 100644
--- a/docs/readme_unreleased.md
+++ b/docs/readme_unreleased.md
@@ -400,7 +400,7 @@ Bug reports and feature requests are welcome! If you encounter issues, please [f
 ```text
 decimo/
 ├── src/                          # All source code
-│   ├── decimo/                   # Core library (mojo package)
+│   ├── decimo/                   # Core library (mojo precompile)
 │   │   ├── bigdecimal/           #   Arbitrary-precision decimal (Decimal)
 │   │   ├── bigint/               #   Arbitrary-precision signed integer (Integer)
 │   │   ├── bigint10/             #   Base-10 signed integer (BigInt10)
@@ -409,7 +409,7 @@ decimo/
 │   │   └── ...                   #   Shared utilities (str, errors, rounding)
 │   └── cli/                      # CLI calculator application
 │       ├── main.mojo             #   Entry point (ArgMojo CLI)
-│       └── calculator/           #   Calculator engine (mojo package)
+│       └── calculator/           #   Calculator engine (mojo precompile)
 │           ├── tokenizer.mojo    #     Lexer: expression → tokens
 │           ├── parser.mojo       #     Shunting-yard: infix → RPN
 │           └── evaluator.mojo    #     RPN evaluator using Decimal
@@ -425,7 +425,7 @@ decimo/
 └── pixi.toml                     # Project configuration and tasks
 ```
 
-`src/decimo/` is a Mojo package — it is compiled with `mojo package` and can be imported by external projects. The TOML parser (`decimo.toml`) is included as a subpackage. `src/cli/` is an application that consumes the `decimo` package and compiles to a standalone binary via `mojo build`.
+`src/decimo/` is a Mojo package — it is compiled with `mojo precompile` and can be imported by external projects. The TOML parser (`decimo.toml`) is included as a subpackage. `src/cli/` is an application that consumes the `decimo` package and compiles to a standalone binary via `mojo build`.
 
 ## Tests and benches
 
diff --git a/src/decimo/decimal128/utility.mojo b/src/decimo/decimal128/utility.mojo
index 2846dbb9..181b4051 100644
--- a/src/decimo/decimal128/utility.mojo
+++ b/src/decimo/decimal128/utility.mojo
@@ -764,7 +764,7 @@ def number_of_bits[dtype: DType, //](var value: Scalar[dtype]) -> Int:
 # up to 58, which is the maximum number of digits we need to handle for
 # Dec128 coefficients.
 #
-# TODO: Currently, this won't work when you create a mojopkg to use.
+# TODO: Currently, this won't work when you create a .mojoc package to use.
 # When Mojo supports module-level variables, this part can be used.
 # ===----------------------------------------------------------------------=== #
 
diff --git a/tests/bigint/test_bigint_special.mojo b/tests/bigint/test_bigint_special.mojo
index 606d4319..2699d73e 100644
--- a/tests/bigint/test_bigint_special.mojo
+++ b/tests/bigint/test_bigint_special.mojo
@@ -109,8 +109,7 @@ def test_multiply_by_word_inplace_preserves_sign() raises:
 
 
 def test_product_range_out_of_bounds_raises() raises:
-    """Tests that product_range rejects bounds that don't fit in a single word.
-    """
+    """Tests that product_range rejects out-of-range bounds."""
     var raised = False
     try:
         _ = product_range(1, 4_294_967_296)  # high = 2^32 > WORD_MAX
diff --git a/tests/test.sh b/tests/test.sh
index 0c6a939a..7522757a 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -36,7 +36,7 @@ cd "$REPO_ROOT"
 # package may not exist yet, so build it on demand. CI normally stages a
 # prebuilt artifact via the `setup-decimo` action, in which case this is a
 # no-op.
-ensure_decimo_mojopkg() {
+ensure_decimo_package() {
     if [[ -f tests/decimo.mojoc ]]; then
         return 0
     fi
@@ -48,7 +48,7 @@ ensure_decimo_mojopkg() {
 
 run_mojo_suite() {
     local dir="$1"
-    ensure_decimo_mojopkg
+    ensure_decimo_package
     for f in tests/"$dir"/*.mojo; do
         echo "=== $f ==="
         # Retry once on transient Python init crash (libpython sporadic load failure).
@@ -80,7 +80,7 @@ run_toml()        { run_mojo_suite toml; }
 
 run_bigfloat() {
     # BigFloat tests require the C wrapper (libdecimo_gmp_wrapper) and MPFR.
-    ensure_decimo_mojopkg
+    ensure_decimo_package
     local WRAPPER_DIR="src/decimo/gmp"
     local WRAPPER_LIB
     if [[ "$(uname)" == "Darwin" ]]; then
@@ -111,7 +111,7 @@ run_bigfloat() {
 
 run_cli() {
     # CLI tests need the extra -I src/cli include path
-    ensure_decimo_mojopkg
+    ensure_decimo_package
     for f in tests/cli/*.mojo; do
         pixi run mojo run -I tests -I src/cli -D ASSERT=all --debug-level=full "$f"
     done