Fix python path resolution on linux #983

Job	Run time
Build zipapp	29s
Build man page	21s
tests (ubuntu-latest, 3.12)	7m 28s
tests (ubuntu-latest, 3.11)	6m 36s
tests (ubuntu-latest, 3.10)	6m 57s
tests (ubuntu-latest, 3.9)	7m 11s
tests (ubuntu-latest, 3.8)	6m 57s
tests (windows-latest, 3.12)	14m 32s
tests (macos-latest, 3.12)	11m 20s
Publish pipx to PyPI on release	0s
Upload zipapp to GitHub Release on release	0s
Bump changelog on release	0s
	1h 1m 51s

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