From 05f0c17b4a4d00611e69770a83b22bada5b89e83 Mon Sep 17 00:00:00 2001
From: Matias Zwinger <matias.zwinger@csc.fi>
Date: Mon, 26 Aug 2024 16:49:03 +0300
Subject: [PATCH] feat: tell flake and system to use elmer cachix

---
 flake.nix         | 9 +++++++++
 modules/elmer.nix | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/flake.nix b/flake.nix
index af48796e..7dcea35b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,6 +16,15 @@
     };
   };
 
+  nixConfig = {
+    extra-substituters = [
+      "https://elmerfem.cachix.org"
+    ];
+    extra-trusted-public-keys = [
+      "elmerfem.cachix.org-1:nWIb5JzEzC2/W6qiuaC0urJRG+S7KvTn9WatX43gkHk="
+    ];
+  };
+
   outputs = inputs@{ self, nixpkgs, flake-utils, ... }:
     with nixpkgs.lib;
     {
diff --git a/modules/elmer.nix b/modules/elmer.nix
index 6774f6f1..eee44493 100644
--- a/modules/elmer.nix
+++ b/modules/elmer.nix
@@ -5,6 +5,15 @@ in
 {
   options.wsl.elmer.enable = mkEnableOption "ElmerFEM";
   config = mkIf config.wsl.elmer.enable {
+    nix.settings = {
+      extra-substituters = [
+        "https://elmerfem.cachix.org"
+      ];
+      extra-trusted-public-keys = [
+        "elmerfem.cachix.org-1:nWIb5JzEzC2/W6qiuaC0urJRG+S7KvTn9WatX43gkHk="
+      ];
+    };
+
     environment.systemPackages = [ inputs.elmer.packages.x86_64-linux.gui pkgs.mpi ];
   };
 }