depot/third_party/nixpkgs/pkgs/build-support/fetchnextcloudapp/default.nix

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{ stdenv, gnutar, findutils, fetchurl, ... }:
{ name
, url
, version
, sha256
, patches ? [ ]
}:
stdenv.mkDerivation {
name = "nc-app-${name}";
inherit version patches;
src = fetchurl {
inherit url sha256;
};
nativeBuildInputs = [
gnutar
findutils
];
unpackPhase = ''
tar -xzpf $src
'';
installPhase = ''
approot="$(dirname $(dirname $(find -path '*/appinfo/info.xml' | head -n 1)))"
if [ -d "$approot" ];
then
mv "$approot/" $out
chmod -R a-w $out
else
echo "Could not find appinfo/info.xml"
exit 1;
fi
'';
}