Flake Utils: Difference between revisions

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{{Warning|using flake-utils is [https://ayats.org/blog/no-flake-utils not recommended]. use [[Flake Parts]] instead}}

{{Warning|using flake-utils is [https://ayats.org/blog/no-flake-utils not recommended]; if you want to use a flake framework, use [[Flake Parts]] instead.}}

[https://github.com/numtide/flake-utils flake-utils] is a collection of pure Nix functions that don't depend on [[Nixpkgs]], and that are useful in the context of writing other [[Flakes|Nix Flakes]].

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= Defining a flake for multiple architectures =

Flakes force you specify a program for each supported architecture. You may want to provide an architecture and nixpkgs-independent overlay, allowing for instance the users of the flake to install the program in their system while using their own version of nixpkgs (anything inside <code>packages</code> will always pin all libraries to a fixed version, unless you use <code>yourflake.inputs.nixpkgs.follows = "nixpkgs";</code>). To avoid re-defining the program multiple times (once in the overlay, once for each architecture etc), you can instead write ~~you~~ flake as follows:

Flakes force you specify a program for each supported architecture. You may want to provide an architecture and nixpkgs-independent overlay, allowing for instance the users of the flake to install the program in their system while using their own version of nixpkgs (anything inside <code>packages</code> will always pin all libraries to a fixed version, unless you use <code>yourflake.inputs.nixpkgs.follows = "nixpkgs";</code>). To avoid re-defining the program multiple times (once in the overlay, once for each architecture etc), you can instead write your flake as follows:

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}

</syntaxhighlight>

== See also ==

* [https://nixcademy.com/posts/1000-instances-of-flake-utils/ 1000 Instances of flake-utils, Nixcademy]

[[Category:Flakes]]

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-{{Warning|using flake-utils is [https://ayats.org/blog/no-flake-utils not recommended]. use [[Flake Parts]] instead}}
+{{Warning|using flake-utils is [https://ayats.org/blog/no-flake-utils not recommended]; if you want to use a flake framework, use [[Flake Parts]] instead.}}
 [https://github.com/numtide/flake-utils flake-utils] is a collection of pure Nix functions that don't depend on [[Nixpkgs]], and that are useful in the context of writing other [[Flakes|Nix Flakes]].
@@ Line 5: / Line 5: @@
 = Defining a flake for multiple architectures =
-Flakes force you specify a program for each supported architecture. You may want to provide an architecture and nixpkgs-independent overlay, allowing for instance the users of the flake to install the program in their system while using their own version of nixpkgs (anything inside <code>packages</code> will always pin all libraries to a fixed version, unless you use <code>yourflake.inputs.nixpkgs.follows = "nixpkgs";</code>). To avoid re-defining the program multiple times (once in the overlay, once for each architecture etc), you can instead write you flake as follows:
+Flakes force you specify a program for each supported architecture. You may want to provide an architecture and nixpkgs-independent overlay, allowing for instance the users of the flake to install the program in their system while using their own version of nixpkgs (anything inside <code>packages</code> will always pin all libraries to a fixed version, unless you use <code>yourflake.inputs.nixpkgs.follows = "nixpkgs";</code>). To avoid re-defining the program multiple times (once in the overlay, once for each architecture etc), you can instead write your flake as follows:
 <syntaxhighlight lang="nix">
@@ Line 53: / Line 53: @@
 }
 </syntaxhighlight>
+== See also ==
+* [https://nixcademy.com/posts/1000-instances-of-flake-utils/ 1000 Instances of flake-utils, Nixcademy]
 [[Category:Flakes]]