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