devenv gc does not seem to do anything.

[iamtoaster]

Describe the bug
When running devenv gc, it says that it deleted 4 environments, yet they are still there, as evidenced by the next invocation of the command that also claims it deleted them.

To reproduce
Run devenv gc twice in a row

user@host [19:56:49] [~]
-> % devenv gc -v
✔ Removing non-existing symlinks in /home/user/data2/xdgdata/devenv/gc ... in 0.0s.
• Found 6 active environments.
• Deleted 12 dangling environments (most likely due to previous GC).
• Running garbage collection (this process will take some time) ... ...
• If you'd like this to run faster, leave a thumbs up at https://github.com/NixOS/nix/issues/7239
• Deleting /nix/store/zjnbnma9kj1d696fhisqdacvl8g81fii-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/zjnbnma9kj1d696fhisqdacvl8g81fii-devenv-shell-env
• Deleting /nix/store/v6wjlq42sw7f7kvlwpaifzjkbamb7b24-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/v6wjlq42sw7f7kvlwpaifzjkbamb7b24-devenv-shell-env
• Deleting /nix/store/3a2wgibz16qwl5rj11rbhyg2kfbks3j8-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/3a2wgibz16qwl5rj11rbhyg2kfbks3j8-devenv-shell-env
• Deleting /nix/store/zkl550549shf4klv9kbp6hpvkdd7bsw4-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/zkl550549shf4klv9kbp6hpvkdd7bsw4-devenv-shell-env
✔ Running garbage collection (this process will take some time) ... in 2.5s.

• Done. Successfully removed 0 symlinks in 2.5374038s.
user@host [19:58:09] [~]
-> % devenv gc -v
✔ Removing non-existing symlinks in /home/user/data2/xdgdata/devenv/gc ... in 0.0s.
• Found 6 active environments.
• Deleted 12 dangling environments (most likely due to previous GC).
• Running garbage collection (this process will take some time) ... ...
• If you'd like this to run faster, leave a thumbs up at https://github.com/NixOS/nix/issues/7239
• Deleting /nix/store/zkl550549shf4klv9kbp6hpvkdd7bsw4-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/zkl550549shf4klv9kbp6hpvkdd7bsw4-devenv-shell-env
• Deleting /nix/store/zjnbnma9kj1d696fhisqdacvl8g81fii-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/zjnbnma9kj1d696fhisqdacvl8g81fii-devenv-shell-env
• Deleting /nix/store/3a2wgibz16qwl5rj11rbhyg2kfbks3j8-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/3a2wgibz16qwl5rj11rbhyg2kfbks3j8-devenv-shell-env
• Deleting /nix/store/v6wjlq42sw7f7kvlwpaifzjkbamb7b24-devenv-shell-env...
• Running command: /nix/store/fsiaa9hq475kn55cbwgc3fakipy5gyzj-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes --option warn-dirty false --keep-going --max-jobs 4 --option eval-cache false store delete /nix/store/v6wjlq42sw7f7kvlwpaifzjkbamb7b24-devenv-shell-env
✔ Running garbage collection (this process will take some time) ... in 2.6s.

• Done. Successfully removed 0 symlinks in 2.639676s.
user@host [19:58:12] [~]
-> %

Version

user@host [19:58:12] [~]
-> % devenv version
devenv 1.1.0 (x86_64-linux)
user@host [20:00:58] [~]
-> % nix --version
nix (Nix) 2.18.5

I am running nixos unstable with flakes enabled.

[sandydoo]

I would imagine those paths are still live, which is why they weren't deleted. It might just be an issue in devenv's wording, but I don't know for sure.

You can verify this by running the raw Nix commands that are printed out in verbose mode. You'll likely see something like:

error: Cannot delete path '/nix/store/ba1gx9vrgfv2l51yd9lj8lfzzc2l56s0-devenv-shell-env' since it is still alive. To find out why, use: nix-store --query --roots and nix-store --query --referrers

[iamtoaster]

You'll likely see something like

Yes, that is exaclty what is printed. So this is just a wording problem and not an actual issue?