mirror of
https://github.com/ryan4yin/nixos-and-flakes-book.git
synced 2024-12-02 04:54:01 +01:00
13 lines
1.4 KiB
Markdown
13 lines
1.4 KiB
Markdown
|
|
||
|
|
`callPackage`, `Overriding`, and `Overlays` are the techniques occasionally used when using Nix to customize the build method of Nix packages.
|
||
|
|
|
||
|
|
We know that many programs have a large number of build parameters that need to be configured, and different users may want to use different build parameters. This is where `Overriding` and `Overlays` come in handy. Let me give you a few examples I have encountered:
|
||
|
|
|
||
|
|
1. [`fcitx5-rime.nix`](https://github.com/NixOS/nixpkgs/blob/e4246ae1e7f78b7087dce9c9da10d28d3725025f/pkgs/tools/inputmethods/fcitx5/fcitx5-rime.nix): By default, `fcitx5-rime` use `rime-data` as the value of `rimeDataPkgs`, but this parameter can be customized by `override`.
|
||
|
|
2. [`vscode/with-extensions.nix`](https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/editors/vscode/with-extensions.nix): This package for VS Code can also be customized by overriding the value of `vscodeExtensions`, thus we can install some custom plugins into VS Code.
|
||
|
|
- [`nix-vscode-extensions`](https://github.com/nix-community/nix-vscode-extensions): This is a vscode plugin manager implemented by overriding `vscodeExtensions`.
|
||
|
|
3. [`firefox/common.nix`](https://github.com/NixOS/nixpkgs/blob/416ffcd08f1f16211130cd9571f74322e98ecef6/pkgs/applications/networking/browsers/firefox/common.nix): Firefox has many customizable parameters too.
|
||
|
|
4. ...
|
||
|
|
|
||
|
|
In short, `callPackage`, `Overriding` and `Overlays` can be used to customize the build parameters of Nix packages.
|