`--apply` for `nix build` #421

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opened 2024-06-25 20:32:34 +00:00 by pennae · 2 comments

pennae commented

2024-06-25 20:32:34 +00:00

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nix eval has --apply to run an installable through a function before printing it. nix build does not. this is quite pointless because evaling something with --apply and building the resulting derivation in two separate steps works just fine.

Describe the solution you'd like

allow --apply in nix build.

## Is your feature request related to a problem? Please describe. `nix eval` has `--apply` to run an installable through a function before printing it. `nix build` does not. this is quite pointless because `eval`ing something with `--apply` and building the resulting derivation in two separate steps works just fine. ## Describe the solution you'd like allow `--apply` in `nix build`.

pennae added the

label 2024-06-25 20:32:34 +00:00

vriska commented

2024-08-24 01:14:13 +00:00

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I frequently use nix-shell -p over nix shell because of the latter's inability to reference an expression relative to Nixpkgs, rather than simply an attrpath. nix shell --apply would provide an alternative (though might not be the best possible ergonomics for this case?).

I frequently use `nix-shell -p` over `nix shell` because of the latter's inability to reference an *expression* relative to Nixpkgs, rather than simply an attrpath. `nix shell --apply` would provide an alternative (though might not be the best possible ergonomics for this case?).