core/pkgs/build-support/fetchmavenartifact/default.nix
2024-05-13 11:34:52 -04:00

74 lines
2.3 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;
}