nix-maven-dep

#!/usr/bin/env bash

if [[ $# != 3 ]]; then
    echo "Usage: $0 groupId artifactId version" >&2
    exit 1
fi

groupId="${1}"
newGroupId="${1/\.//}"
artifactId="${2}"
version="${3}"
url="https://repo1.maven.org/maven2/$newGroupId/$artifactId/$version/$artifactId-$version.jar"
filename="$artifactId-$version.jar"

hash="$(nix store prefetch-file "$url" --hash-type sha256 --name "$filename" --json | jq -r .hash)"
cat <<-EOF
fetchMavenArtifact {
  groupId = "${groupId}";
  artifactId = "${artifactId}";
  version = "${version}";
  hash = "${hash}";
}
EOF