bug: resolve-go-packages.sh tests fail on macOS (BSD paste incompatibility)

[sonupreetam]

Summary

Three tests in tests/test_crapload_package_resolution.py fail on macOS but pass in CI (ubuntu-latest):

• test_multi_module_repo
• test_go_workspace
• test_malformed_go_mod

Root Cause

scripts/resolve-go-packages.sh uses paste -sd ' ' to join multi-module package patterns. BSD paste (macOS) has different flag semantics than GNU paste (Linux), causing the command to fail with:

usage: paste [-s] [-d delimiters] file ...

Reproduction

make test

On macOS, the 3 tests fail with returncode=1 and stderr showing the paste usage error. On Linux (CI), all tests pass.

Impact

Local-only. CI is unaffected since it runs on ubuntu-latest with GNU coreutils. Developers running make test on macOS see 3 spurious failures.

Suggested Fix

Replace the paste usage in resolve-go-packages.sh with a portable alternative (e.g., tr, awk, or bash parameter expansion) that works on both BSD and GNU systems.