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|
# This module provides JAVA_HOME, with a different way to install java
# system-wide.
{ config, lib, pkgs, ... }:
let
cfg = config.programs.java;
in
{
options = {
programs.java = {
enable = lib.mkEnableOption "java" // {
description = ''
Install and setup the Java development kit.
::: {.note}
This adds JAVA_HOME to the global environment, by sourcing the
jdk's setup-hook on shell init. It is equivalent to starting a shell
through 'nix-shell -p jdk', or roughly the following system-wide
configuration:
environment.variables.JAVA_HOME = ''${pkgs.jdk.home}/lib/openjdk;
environment.systemPackages = [ pkgs.jdk ];
:::
'';
};
package = lib.mkPackageOption pkgs "jdk" {
example = "jre";
};
binfmt = lib.mkEnableOption "binfmt to execute java jar's and classes";
};
};
config = lib.mkIf cfg.enable {
boot.binfmt.registrations = lib.mkIf cfg.binfmt {
java-class = {
recognitionType = "extension";
magicOrExtension = "class";
interpreter = pkgs.writeShellScript "java-class-wrapper" ''
test -e ${cfg.package}/nix-support/setup-hook && source ${cfg.package}/nix-support/setup-hook
classpath=$(dirname "$1")
class=$(basename "''${1%%.class}")
$JAVA_HOME/bin/java -classpath "$classpath" "$class" "''${@:2}"
'';
};
java-jar = {
recognitionType = "extension";
magicOrExtension = "jar";
interpreter = pkgs.writeShellScript "java-jar-wrapper" ''
test -e ${cfg.package}/nix-support/setup-hook && source ${cfg.package}/nix-support/setup-hook
$JAVA_HOME/bin/java -jar "$@"
'';
};
};
environment.systemPackages = [ cfg.package ];
environment.shellInit = ''
test -e ${cfg.package}/nix-support/setup-hook && source ${cfg.package}/nix-support/setup-hook
'';
};
}
|
