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pmg/internal/shim
Sahil BansalandGitHub 141894ed8f fix(shim): recognize shims at arbitrary paths via PMG_SHIM_PATH (#323)
* fix(shim): recognize shims at arbitrary paths via PMG_SHIM_PATH

The recursion guard in FilterPMGFromPath hardcoded the `/.pmg/bin`
suffix, so shims placed anywhere else (e.g. `/usr/local/lib/pmg/bin`,
`/shims`, or any future system-wide location) would not be stripped
from PATH when PMG resolved the real package manager. The shim would
resolve back to itself and PMG would re-exec it in an infinite loop.

This blocks moving shims out of `~/.pmg/bin` — needed for a future
`pmg setup install --system` (#317) — and also any user attempt to
relocate shims manually.

Have the shim export its own path before exec'ing pmg, and let the
filter use that to strip the exact dir at runtime. Keep the legacy
suffix check as a fallback so already-installed shims keep working
until they are regenerated.

Also drop `PMG_SHIM_PATH` from the env passed to the real package
manager so child processes don't inherit a stale marker.

* docs(shim): clarify PMG_SHIM_PATH is internal and unsupported to set manually

* remove comment

* update comment
2026-06-09 20:33:14 +05:30
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