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lab-infra/lib/nix-patches/default.nix
2024-10-12 00:20:58 +02:00

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Nix

# Copyright Tom Hubrecht, (2023-2024)
#
# Tom Hubrecht <tom@hubrecht.ovh>
#
# This software is governed by the CeCILL license under French law and
# abiding by the rules of distribution of free software. You can use,
# modify and/ or redistribute the software under the terms of the CeCILL
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info".
#
# As a counterpart to the access to the source code and rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty and the software's author, the holder of the
# economic rights, and the successive licensors have only limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading, using, modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean that it is complicated to manipulate, and that also
# therefore means that it is reserved for developers and experienced
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or
# data to be ensured and, more generally, to use and operate it in the
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL license and that you accept its terms.
{
patchFile,
excludeGitHubManual ? true,
fetchers ? { },
}:
rec {
base =
{ pkgs }:
rec {
mkUrlPatch =
attrs:
pkgs.fetchpatch (
{
hash = pkgs.lib.fakeHash;
}
// attrs
// (pkgs.lib.optionalAttrs (excludeGitHubManual && !(builtins.hasAttr "includes" attrs)) {
excludes = (attrs.excludes or [ ]) ++ [ "nixos/doc/manual/*" ];
})
);
mkGitHubPatch =
{ id, ... }@attrs:
mkUrlPatch (
(builtins.removeAttrs attrs [ "id" ])
// {
url = "https://github.com/NixOS/nixpkgs/pull/${builtins.toString id}.diff";
}
);
mkCommitPatch =
{ sha, ... }@attrs:
mkUrlPatch (
(builtins.removeAttrs attrs [ "sha" ])
// {
url = "https://github.com/NixOS/nixpkgs/commit/${builtins.toString sha}.diff";
}
);
patchFunctions = {
commit = mkCommitPatch;
github = mkGitHubPatch;
remote = pkgs.fetchpatch;
static = attrs: attrs.path;
url = mkUrlPatch;
} // fetchers;
mkPatch =
{
_type ? "github",
...
}@attrs:
if builtins.hasAttr _type patchFunctions then
patchFunctions.${_type} (builtins.removeAttrs attrs [ "_type" ])
else
throw "Unknown patch type: ${builtins.toString _type}.";
mkPatches = v: builtins.map mkPatch ((import patchFile).${v} or [ ]);
applyPatches =
{
src,
name,
patches ? mkPatches name,
}:
if patches == [ ] then
src
else
pkgs.applyPatches {
inherit patches src;
name = "${name}-patched";
};
applyPatches' = name: src: applyPatches { inherit name src; };
};
mkNixpkgsSrc = { src, name }: (base { pkgs = import src { }; }).applyPatches { inherit src name; };
}