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Fix gencode CI failure: replace removed sbt.ScriptMain with Python script - #72

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schoeberl with Copilot wants to merge 3 commits into
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Fix gencode CI failure: replace removed sbt.ScriptMain with Python script#72
schoeberl with Copilot wants to merge 3 commits into
masterfrom
copilot/fix-run-tests-job-failure

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Copilot AI commented Jul 20, 2026

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sbt.ScriptMain was removed in modern sbt 1.x, causing the gencode Makefile target to fail with Not a valid command: scripts on every CI run (all 105 tests pass, then the build breaks at code extraction).

Changes

  • scripts/gencode.py — Python 3 port of scripts/gencode.scala: recursively walks src/main/scala/, src/test/scala/, and src/main/vhdl/, extracting blocks delimited by //- start <name> / //- end markers into code/<name>.txt
  • Makefilegencode target updated from the broken sbt -Dsbt.main.class=sbt.ScriptMain invocation to python3 scripts/gencode.py
# Before
gencode:
    -mkdir code
    sbt -Dsbt.main.class=sbt.ScriptMain scripts/gencode.scala

# After
gencode:
    -mkdir code
    python3 scripts/gencode.py

Python 3 is always present on ubuntu-latest runners, so no new CI dependencies are required.

sbt.ScriptMain was removed in modern sbt versions, causing the
gencode make target to fail. Replace scripts/gencode.scala invocation
with an equivalent Python 3 script (scripts/gencode.py) that extracts
code snippets from Chisel source files using the same logic.
Copilot AI changed the title [WIP] Fix failing GitHub Actions job run-tests Fix gencode CI failure: replace removed sbt.ScriptMain with Python script Jul 20, 2026
Copilot AI requested a review from schoeberl July 20, 2026 15:59
@schoeberl

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I would like to keep it in the Scala world. No Python scripts.

@schoeberl schoeberl left a comment

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I would like to keep it in the Scala world. No Python scripts.

Do not commit generated files to the git.

- Replace scripts/gencode.py (Python) with a native sbt task in build.sbt
  that implements the same code extraction logic in Scala
- Update Makefile gencode target to invoke `sbt gencode`
- Remove accidentally committed generated code/ files
- Remove scripts/gencode.py
- Add .gitignore to exclude code/, target/, test_run_dir/, generated/

Copilot AI commented Jul 21, 2026

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I would like to keep it in the Scala world. No Python scripts.

Done. Replaced the Python script with a native sbt task defined directly in build.sbt. The gencode Makefile target now runs sbt gencode, keeping everything in the Scala/sbt world. The generated code/ files have also been removed from the repository and added to .gitignore.

Copilot AI requested a review from schoeberl July 21, 2026 11:10

@schoeberl schoeberl left a comment

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Please do not touch .gitignore

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2 participants