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Nix Package Manager development

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For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here.186 Servers

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16 Sep 2025
@getchoo:matrix.orggetchooi figured this was something probably fixed in an update upstream and i'd need to wait on a rebase, but the code there actually remains entirely the same https://github.com/DeterminateSystems/nix-installer/blob/8a7bb095d93ada552d20d2f22ffd9f1668f8e394/src/action/base/setup_default_profile.rs#L56-L6904:22:07
@getchoo:matrix.orggetchoo i think this might only work because the hash part of the release nix store path happens to be sorted before the other components, while it isn't in the pre-release tarball from the artifacts i'm pushing into this lol 04:33:40
@getchoo:matrix.orggetchoo * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`` error
i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matching nix-* and runs it, with no checks for if /bin/nix-store actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70
04:33:57
@getchoo:matrix.orggetchoo * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-*and runs it, with no checks for if/bin/nix-store` actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 04:34:15
@getchoo:matrix.orggetchoo * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"` error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-*and runs it, with no checks for if/bin/nix-store` actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 04:34:31
@getchoo:matrix.orggetchoo * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`` error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-\*and runs it, with no checks for if/bin/nix-store\ actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 04:34:42
@getchoo:matrix.orggetchoo *

when dogfooding is enabled with this experimental installer option, you'll end up with an error like this

4: Failed to execute command `HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`

i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-\*and runs it, with no checks for if/bin/nix-store\ actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70

04:35:11
@getchoo:matrix.orggetchoodoes seem to be the case after re-rolling the hash on a new revision. reported it https://github.com/NixOS/experimental-nix-installer/issues/47 and opened up a draft of everything in https://github.com/NixOS/nix/pull/14002. i'm pretty sure it's in a good state, minus this bug?06:13:53
@getchoo:matrix.orggetchoo* does seem to be the case after re-rolling the hash on a new revision. reported it in https://github.com/NixOS/experimental-nix-installer/issues/47 and opened up a draft of everything in https://github.com/NixOS/nix/pull/14002. i'm pretty sure it's in a good state, minus this bug?06:14:06
@getchoo:matrix.orggetchoointeresting, lix's fork of the installer doesn't have this issue: https://git.lix.systems/lix-project/lix-installer/src/commit/e4048682396999c11069f99f9b323f1d4a333bbc/src/action/base/setup_default_profile.rs#L57 seems to go back to an earlier implementation that was removed after they forked in https://github.com/DeterminateSystems/nix-installer/commit/16ee60a2f7d5d172db91484729f15dd09d0e538306:28:04
@getchoo:matrix.orggetchoo

....nevermind

$ ls -d nix-tarball/nix-2.32.0pre20250915_5e17a3f-x86_64-linux/store/*-[nl]ix-*.*.* | head -n 1
nix-tarball/nix-2.32.0pre20250915_5e17a3f-x86_64-linux/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre
06:37:04
@joerg:thalheim.ioMic92 getchoo: should we just fix the regex? 11:22:45
@joerg:thalheim.ioMic92by making it more specific11:23:01

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