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| author | Alyssa Ross <hi@alyssa.is> | 2023-06-16 06:56:35 +0000 |
|---|---|---|
| committer | Alyssa Ross <hi@alyssa.is> | 2023-06-16 06:56:35 +0000 |
| commit | 99fcaeccb89621dd492203ce1f2d551c06f228ed (patch) | |
| tree | 41cb730ae07383004789779b0f6e11cb3f4642a3 /nixpkgs/doc/using/overrides.chapter.md | |
| parent | 59c5f5ac8682acc13bb22bc29c7cf02f7d75f01f (diff) | |
| parent | 75a5ebf473cd60148ba9aec0d219f72e5cf52519 (diff) | |
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Merge branch 'nixos-unstable' of https://github.com/NixOS/nixpkgs
Conflicts: nixpkgs/nixos/modules/config/console.nix nixpkgs/nixos/modules/services/mail/mailman.nix nixpkgs/nixos/modules/services/mail/public-inbox.nix nixpkgs/nixos/modules/services/mail/rss2email.nix nixpkgs/nixos/modules/services/networking/ssh/sshd.nix nixpkgs/pkgs/applications/networking/instant-messengers/dino/default.nix nixpkgs/pkgs/applications/networking/irc/weechat/default.nix nixpkgs/pkgs/applications/window-managers/sway/default.nix nixpkgs/pkgs/build-support/go/module.nix nixpkgs/pkgs/build-support/rust/build-rust-package/default.nix nixpkgs/pkgs/development/interpreters/python/default.nix nixpkgs/pkgs/development/node-packages/overrides.nix nixpkgs/pkgs/development/tools/b4/default.nix nixpkgs/pkgs/servers/dict/dictd-db.nix nixpkgs/pkgs/servers/mail/public-inbox/default.nix nixpkgs/pkgs/tools/security/pinentry/default.nix nixpkgs/pkgs/tools/text/unoconv/default.nix nixpkgs/pkgs/top-level/all-packages.nix
Diffstat (limited to 'nixpkgs/doc/using/overrides.chapter.md')
| -rw-r--r-- | nixpkgs/doc/using/overrides.chapter.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/nixpkgs/doc/using/overrides.chapter.md b/nixpkgs/doc/using/overrides.chapter.md index a97a39354a9d..198b4504197d 100644 --- a/nixpkgs/doc/using/overrides.chapter.md +++ b/nixpkgs/doc/using/overrides.chapter.md @@ -63,7 +63,7 @@ You should prefer `overrideAttrs` in almost all cases, see its documentation for ::: ::: {.warning} -Do not use this function in Nixpkgs as it evaluates a Derivation before modifying it, which breaks package abstraction and removes error-checking of function arguments. In addition, this evaluation-per-function application incurs a performance penalty, which can become a problem if many overrides are used. It is only intended for ad-hoc customisation, such as in `~/.config/nixpkgs/config.nix`. +Do not use this function in Nixpkgs as it evaluates a derivation before modifying it, which breaks package abstraction. In addition, this evaluation-per-function application incurs a performance penalty, which can become a problem if many overrides are used. It is only intended for ad-hoc customisation, such as in `~/.config/nixpkgs/config.nix`. ::: The function `overrideDerivation` creates a new derivation based on an existing one by overriding the original's attributes with the attribute set produced by the specified function. This function is available on all derivations defined using the `makeOverridable` function. Most standard derivation-producing functions, such as `stdenv.mkDerivation`, are defined using this function, which means most packages in the nixpkgs expression, `pkgs`, have this function. @@ -74,8 +74,8 @@ Example usage: mySed = pkgs.gnused.overrideDerivation (oldAttrs: { name = "sed-4.2.2-pre"; src = fetchurl { - url = ftp://alpha.gnu.org/gnu/sed/sed-4.2.2-pre.tar.bz2; - sha256 = "11nq06d131y4wmf3drm0yk502d2xc6n5qy82cg88rb9nqd2lj41k"; + url = "ftp://alpha.gnu.org/gnu/sed/sed-4.2.2-pre.tar.bz2"; + hash = "sha256-MxBJRcM2rYzQYwJ5XKxhXTQByvSg5jZc5cSHEZoB2IY="; }; patches = []; }); |