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Nixpkgs/Create and debug packages: Difference between revisions

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m →Using nix-shell for package development: Improve grammar in note about preConfigurePhase
 
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You would have seen the dependencies downloading, but the ''bc-build'' directory remains empty. The build system would next invoke a builder with some arguments. You can obtain the exact name of the builder (usually '''bash''') and the arguments '''args''' of the builder (typically a shell script) by checking the corresponding value in:
You would have seen the dependencies downloading, but the ''bc-build'' directory remains empty. The build system would next invoke a builder with some arguments. You can obtain the exact name of the builder (usually '''bash''') and the arguments '''args''' of the builder (typically a shell script) by checking the corresponding value in:
<syntaxhighlight lang="bash">
<syntaxhighlight lang="bash">
$ nix show-derivation $(nix-instantiate .)
$ nix derivation show $(nix-instantiate .)
</syntaxhighlight>
</syntaxhighlight>


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</syntaxhighlight>
</syntaxhighlight>


{{Note|you do not need to run $preConfigurePhase explicitly as it is run, when running configurePhase already.}}
{{Note|You do not need to run $preConfigurePhase explicitly, as it will already be run implicitly when running configurePhase.}}


To list all functions which are declared in '''set''':
To list all functions which are declared in '''set''':
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Your program to test the library:
Your program to test the library:
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
{ pkgs ? import <nixpkgs> {} }:
{
with pkgs;
  pkgs ? import <nixpkgs> {
let yourLibraryName = callPackage /path/to/library/derivation.nix {};
    overlays = [
in
      (final: prev: {
stdenv.mkDerivation {
        my-library = prev.callPackage ./my-library.nix { };
  nativeBuildInputs = [
      })
     yourLibraryName /* Add here if needed at build time */
    ];
     /* Add other dependencies if needed */
  },
  ]
}:
  buildInputs = [
pkgs.callPackage (
     yourLibraryName /* Add here if needed at runtime */
  {
     /* Add other dependencies if needed */
    stdenv,
  ]
    hello,
   /* Add the other stuff as needed */
    pkg-config,
}
    my-library,
  }:
  stdenv.mkDerivation {
    pname = "something";
    version = "1";
    strictDeps = true;
     # host/target agnostic programs
     depsBuildBuild = [
      hello
    ];
    # compilers & linkers & dependecy finding programs
    nativeBuildInputs = [
      pkg-config
     ];
    # libraries
     buildInputs = [
      my-library
    ];
   }
) { }
</syntaxhighlight>
</syntaxhighlight>


Retrieved from "https://wiki.nixos.org/wiki/Nixpkgs/Create_and_debug_packages"