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nix store gc --dry-run prints nothing (nix-collect-garbage --dry-run is correct) #905

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opened 2025-07-07 12:36:14 +00:00 by qyriad · 0 comments
qyriad commented 2025-07-07 12:36:14 +00:00
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$ nix store gc -v --dry-run
finding garbage collector roots...
determining live/dead paths...

Compared to:

$ nix-collect-garbage -v --dry-run
finding garbage collector roots...
determining live/dead paths...
/nix/store/0052f2lhvy69w0mr69cn8nsgqw1d51zp-pytest_subtests-0.14.1.tar.gz
/nix/store/005r00vnfv6v1j6y5l8c7iirbsjljvhd-libdc1394-2.2.7.tar.gz
[…]

Without --dry-run, nix store gc does in fact delete the correct paths, so it's just --dry-run that's busted.

```bash $ nix store gc -v --dry-run finding garbage collector roots... determining live/dead paths... ``` Compared to: ```bash $ nix-collect-garbage -v --dry-run finding garbage collector roots... determining live/dead paths... /nix/store/0052f2lhvy69w0mr69cn8nsgqw1d51zp-pytest_subtests-0.14.1.tar.gz /nix/store/005r00vnfv6v1j6y5l8c7iirbsjljvhd-libdc1394-2.2.7.tar.gz […] ``` Without `--dry-run`, `nix store gc` does in fact delete the correct paths, so it's just `--dry-run` that's busted.
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Probably affects CppNix. This is a best-effort tag for troubles in old code; it exists to inform the CppNix team about problems they might care about also.

  
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nix-eval-jobs for Lix

  
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makes the user experience better :)

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Reference: lix-project/lix#905
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