core/pkgs/build-support/fetchmavenartifact/default.nix
2024-06-30 09:16:52 +01:00

94 lines
2.4 KiB
Nix

# Adaptation of the MIT-licensed work on `sbt2nix` done by Charles O'Farrell
{
lib,
fetchurl,
stdenv,
}:
let
defaultRepos = [
"https://repo1.maven.org/maven2"
"https://oss.sonatype.org/content/repositories/releases"
"https://oss.sonatype.org/content/repositories/public"
"https://repo.typesafe.com/typesafe/releases"
];
in
args@{
# Example: "org.apache.httpcomponents"
groupId,
# Example: "httpclient"
artifactId,
# Example: "4.3.6"
version,
# Example: "jdk11"
classifier ? null,
# List of maven repositories from where to fetch the artifact.
# Example: [ http://oss.sonatype.org/content/repositories/public ].
repos ? defaultRepos,
# The `url` and `urls` parameters, if specified should point to the JAR
# file and will take precedence over the `repos` parameter. Only one of `url`
# and `urls` can be specified, not both.
url ? "",
urls ? [ ],
# The rest of the arguments are just forwarded to `fetchurl`.
...
}:
# only one of url and urls can be specified at a time.
assert (url == "") || (urls == [ ]);
# if repos is empty, then url or urls must be specified.
assert (repos != [ ]) || (url != "") || (urls != [ ]);
let
pname =
(lib.replaceStrings [ "." ] [ "_" ] groupId)
+ "_"
+ (lib.replaceStrings [ "." ] [ "_" ] artifactId);
suffix = lib.optionalString (classifier != null) "-${classifier}";
filename = "${artifactId}-${version}${suffix}.jar";
mkJarUrl =
repoUrl:
lib.concatStringsSep "/" [
(lib.removeSuffix "/" repoUrl)
(lib.replaceStrings [ "." ] [ "/" ] groupId)
artifactId
version
filename
];
urls_ =
if url != "" then
[ url ]
else if urls != [ ] then
urls
else
map mkJarUrl repos;
jar = fetchurl (
builtins.removeAttrs args [
"groupId"
"artifactId"
"version"
"classifier"
"repos"
"url"
]
// {
urls = urls_;
name = "${pname}-${version}.jar";
}
);
in
stdenv.mkDerivation {
inherit pname version;
dontUnpack = true;
# By moving the jar to $out/share/java we make it discoverable by java
# packages packages that mention this derivation in their buildInputs.
installPhase = ''
mkdir -p $out/share/java
ln -s ${jar} $out/share/java/${filename}
'';
# We also add a `jar` attribute that can be used to easily obtain the path
# to the downloaded jar file.
passthru.jar = jar;
}