From b3565b34477b2e8dbea174cfc9020ac248644731 Mon Sep 17 00:00:00 2001
From: Norbert Melzer <timmelzer@gmail.com>
Date: Fri, 16 Dec 2022 07:10:26 +0100
Subject: [PATCH] java: remove IFD

The previous variant used IFD to generate the `JAVA_HOME` variable and relied on internal hooks of the `java` package, this failed for a user cross compiling their configuration.

This PR changes that and uses the `home` attribute, as documented in the very last sentence of the https://nixos.org/manual/nixpkgs/stable/#sec-language-java chapter.
---
 modules/programs/java.nix | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/modules/programs/java.nix b/modules/programs/java.nix
index 5b2a0129..24467a25 100644
--- a/modules/programs/java.nix
+++ b/modules/programs/java.nix
@@ -36,11 +36,6 @@ in {
   config = mkIf cfg.enable {
     home.packages = [ cfg.package ];
 
-    home.sessionVariables = {
-      JAVA_HOME = fileContents (pkgs.runCommandLocal "java-home" { } ''
-        source "${cfg.package}/nix-support/setup-hook"
-        echo "$JAVA_HOME" > $out
-      '');
-    };
+    home.sessionVariables.JAVA_HOME = cfg.package.home;
   };
 }