feat: shared dep config between hyperbeam & Forge template

install-template

@@ -103,11 +103,28 @@ write_device_template() {
 EOF
 }
 
+render_shared_rebar_config() {
+    path="$1"
+    shared_config="$2"
+    out="$3"
+    # reason: generated device repos cannot read files from this repo when their
+    # rebar.config loads, so render shared_rebar.config inline.
+    while IFS= read -r line; do
+        case "$line" in
+            *"{{hb_shared_rebar_config}}"*) cat "$shared_config" ;;
+            *) printf '%s\n' "$line" ;;
+        esac
+    done < "$path" > "$out"
+    mv "$out" "$path"
+}
+
 install_template() {
     template_dir="$1"
     hb_dep="$2"
     hb_plugin="$3"
-    src="$(script_dir)/src/forge/plugin/priv"
+    root="$(script_dir)"
+    src="$root/src/forge/plugin/priv"
+    shared_rebar_config="$root/shared_rebar.config"
     support="$template_dir/hyperbeam-device"
     tmp="$support.tmp.$$"
     template="$template_dir/device.template"
@@ -117,6 +134,10 @@ install_template() {
     mkdir -p "$tmp"
     cp -R "$src/." "$tmp"
     rm -f "$tmp/device.template"
+    render_shared_rebar_config \
+        "$tmp/_rebar.config" \
+        "$shared_rebar_config" \
+        "$tmp/_rebar.config.rendered"
     write_device_template \
         "$template_tmp" \
         "$hb_dep" \

rebar.config

@@ -108,10 +108,6 @@
     {release, true}
 ]}.
 
-{overrides, [
-    {override, gun, [{deps, [cowlib]}]}
-]}.
-
 {pre_hooks, [
     {compile, "bash -c \"mkdir -p _build && printf '%s\\n\\n%s\\n\\n%s\\n' '-define(HB_BUILD_SOURCE, <<\\\"$(git rev-parse HEAD)\\\">>).' '-define(HB_BUILD_SOURCE_SHORT, <<\\\"$(git rev-parse --short HEAD)\\\">>).' '-define(HB_BUILD_TIME, $(date +%s)).' > _build/hb_buildinfo.hrl\""},
     {compile, "bash -c \"mkdir -p _build && (test -f _build/hb_preloaded_index.hrl || printf '%s\\n\\n%s\\n' '%% Generated by hb_preload - do not edit.' '-define(PRELOADED_DEVICES_INDEX_MESSAGE_ID, undefined).' > _build/hb_preloaded_index.hrl)\""},

rebar.config.script

@@ -0,0 +1,14 @@
+%% -*- erlang -*-
+%% sequence: rebar3 reads rebar.config before Forge plugins run.
+%% load shared_rebar.config here, then install-template render the same file into
+%% `rebar3 new device`.
+ScriptDir = filename:dirname(SCRIPT),
+{ok, SharedConfig} =
+    file:consult(
+        filename:join(ScriptDir, "shared_rebar.config")
+    ),
+lists:foldl(
+    fun({Key, _} = Term, Acc) -> lists:keystore(Key, 1, Acc, Term) end,
+    CONFIG,
+    SharedConfig
+).

shared_rebar.config

@@ -0,0 +1,7 @@
+%% shared rebar.config terms for hyperbeam codebase and `rebar3 new device`.
+%% rebar3 reads config before Forge plugins run, so install-template renders
+%% this file into generated device repos.
+{overrides, [
+    {override, cowboy, [{deps, [cowlib, ranch]}]},
+    {override, gun, [{deps, [cowlib]}]}
+]}.

src/forge/plugin/priv/_rebar.config

@@ -4,6 +4,10 @@
     {hb, {{hb_dep}}}
 ]}.
 
+%% install-template replaces this marker with repo's in-root shared_rebar.config.
+%% DO NOT TOUCH OR MODIFY THE MARKER:
+%% {{hb_shared_rebar_config}}
+
 {plugins, [
     {plugin, {{hb_plugin}}},
     {rebar3_eunit_start,