mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-22 06:05:13 +00:00
7b0167204d
tarballs.nixos.org is omitted from the change because urls from there are always hashed and checked
74 lines
2.5 KiB
XML
74 lines
2.5 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
|
||
xmlns:xlink="http://www.w3.org/1999/xlink"
|
||
xmlns:xi="http://www.w3.org/2001/XInclude"
|
||
version="5.0"
|
||
xml:id="sec-custom-packages">
|
||
<title>Adding Custom Packages</title>
|
||
|
||
<para>
|
||
It’s possible that a package you need is not available in NixOS. In that
|
||
case, you can do two things. First, you can clone the Nixpkgs repository, add
|
||
the package to your clone, and (optionally) submit a patch or pull request to
|
||
have it accepted into the main Nixpkgs repository. This is described in
|
||
detail in the <link
|
||
xlink:href="https://nixos.org/nixpkgs/manual">Nixpkgs
|
||
manual</link>. In short, you clone Nixpkgs:
|
||
<screen>
|
||
<prompt>$ </prompt>git clone https://github.com/NixOS/nixpkgs
|
||
<prompt>$ </prompt>cd nixpkgs
|
||
</screen>
|
||
Then you write and test the package as described in the Nixpkgs manual.
|
||
Finally, you add it to <literal>environment.systemPackages</literal>, e.g.
|
||
<programlisting>
|
||
<xref linkend="opt-environment.systemPackages"/> = [ pkgs.my-package ];
|
||
</programlisting>
|
||
and you run <command>nixos-rebuild</command>, specifying your own Nixpkgs
|
||
tree:
|
||
<screen>
|
||
# nixos-rebuild switch -I nixpkgs=/path/to/my/nixpkgs</screen>
|
||
</para>
|
||
|
||
<para>
|
||
The second possibility is to add the package outside of the Nixpkgs tree. For
|
||
instance, here is how you specify a build of the
|
||
<link xlink:href="https://www.gnu.org/software/hello/">GNU Hello</link>
|
||
package directly in <filename>configuration.nix</filename>:
|
||
<programlisting>
|
||
<xref linkend="opt-environment.systemPackages"/> =
|
||
let
|
||
my-hello = with pkgs; stdenv.mkDerivation rec {
|
||
name = "hello-2.8";
|
||
src = fetchurl {
|
||
url = "mirror://gnu/hello/${name}.tar.gz";
|
||
sha256 = "0wqd8sjmxfskrflaxywc7gqw7sfawrfvdxd9skxawzfgyy0pzdz6";
|
||
};
|
||
};
|
||
in
|
||
[ my-hello ];
|
||
</programlisting>
|
||
Of course, you can also move the definition of <literal>my-hello</literal>
|
||
into a separate Nix expression, e.g.
|
||
<programlisting>
|
||
<xref linkend="opt-environment.systemPackages"/> = [ (import ./my-hello.nix) ];
|
||
</programlisting>
|
||
where <filename>my-hello.nix</filename> contains:
|
||
<programlisting>
|
||
with import <nixpkgs> {}; # bring all of Nixpkgs into scope
|
||
|
||
stdenv.mkDerivation rec {
|
||
name = "hello-2.8";
|
||
src = fetchurl {
|
||
url = "mirror://gnu/hello/${name}.tar.gz";
|
||
sha256 = "0wqd8sjmxfskrflaxywc7gqw7sfawrfvdxd9skxawzfgyy0pzdz6";
|
||
};
|
||
}
|
||
</programlisting>
|
||
This allows testing the package easily:
|
||
<screen>
|
||
<prompt>$ </prompt>nix-build my-hello.nix
|
||
<prompt>$ </prompt>./result/bin/hello
|
||
Hello, world!
|
||
</screen>
|
||
</para>
|
||
</section>
|