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debug-and-fix

Testing & Quality
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Strategies for debugging build failures, runtime errors, writing complete output files (ICS/JSON/config), and constraint satisfaction tasks.

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Source SKILL.md: https://github.com/A-EVO-Lab/a-evolve/blob/HEAD/artifacts/tb2_clawcode_opus46/skills/debug-and-fix/SKILL.md

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Debug and Fix Skill

1. C/C++ build fixes

apt-get update && apt-get install -y build-essential pkg-config

Protobuf API fix

find . -name "*.cc" -o -name "*.cpp" | xargs sed -i \
  's/SetTotalBytesLimit(\([^,]*\),[^)]*)/SetTotalBytesLimit(\1)/g'

2. Binary inspection without xxd

od -A x -t x1z -v file.dat | head -100

3. Writing complete structured output files

Use Python to write ICS/JSON/XML — avoids heredoc truncation:

from datetime import datetime
lines = ['BEGIN:VCALENDAR','VERSION:2.0','BEGIN:VEVENT',
    f'DTSTART:{start:%Y%m%dT%H%M%S}',
    f'DTEND:{end:%Y%m%dT%H%M%S}',
    f'SUMMARY:{title}',
    'END:VEVENT','END:VCALENDAR']
with open('/app/out.ics','w') as f:
    f.write('\r\n'.join(lines)+'\r\n')

4. Scheduling / constraint satisfaction

  • Parse ALL constraints before attempting solutions
  • Write a systematic solver to a .py file (enumerate candidates, check all constraints)
  • Verify solution satisfies EVERY constraint before writing output
# Write complete solver to file to avoid truncation:
with open('/app/solver.py','w') as f:
    f.write('''...all imports, logic, output...''')
# Then run: python3 /app/solver.py

5. Implementation code

  • Write complete files — don't build up fragments
  • For complex logic, use Python to write files programmatically
  • Test immediately after writing
  • If tests fail, rewrite the COMPLETE file