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nix eval has baffling forcing behaviour #2

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opened 2024-03-03 22:49:23 +00:00 by jade · 3 comments

jade commented

2024-03-03 22:49:23 +00:00

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Describe the bug

Also fun fact, from that I learned that  `nix eval --eval --expr 'with import <nixpkgs> {}; { a = fish;  b = bash; }'  --impure` will instead of acting the same, instead it will try to evaluate all of nixpkgs and segfault

@lunaphied

If you have a problem with a specific package or NixOS,
you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues.

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nix-env --version output

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**Describe the bug** ``` Also fun fact, from that I learned that `nix eval --eval --expr 'with import <nixpkgs> {}; { a = fish; b = bash; }' --impure` will instead of acting the same, instead it will try to evaluate all of nixpkgs and segfault ``` @lunaphied If you have a problem with a specific package or NixOS, you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues. **Steps To Reproduce** 1. Go to '...' 2. Click on '....' 3. Scroll down to '....' 4. See error **Expected behavior** A clear and concise description of what you expected to happen. **`nix-env --version` output** **Additional context** Add any other context about the problem here. **Priorities** Add :+1: to [issues you find important](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc).

rbt commented

2024-03-09 05:33:24 +00:00

Owner

Doesn't even need with:

nix eval --expr 'let pkgs = import <nixpkgs> {}; in { a = pkgs.fish;  b = pkgs.bash; }'  --impure

Doesn't even need `with`: ``` nix eval --expr 'let pkgs = import <nixpkgs> {}; in { a = pkgs.fish; b = pkgs.bash; }' --impure ```

rbt commented

2024-03-09 05:46:25 +00:00

Owner

Doesn't even need --expr:

nix eval nixpkgs#bash

Doesn't even need `--expr`: ``` nix eval nixpkgs#bash ```

jade commented

2024-03-10 22:20:26 +00:00

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fixed by wiggles upstream, pulled in in https://gerrit.lix.systems/c/lix/+/446

jade closed this issue

2024-03-10 22:20:27 +00:00

lix-project referenced this issue from a commit

2024-03-28 15:21:35 +00:00

progress-bar.cc: fix signed overflow

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Reference: lix-project/lix#2

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