nixos: clean up cache in home

nixos/msi/configuration.nix

@@ -55,7 +55,8 @@ in
 	i18n = {
 		defaultLocale = "en_US.UTF-8";
 		inputMethod = {
-			enabled = "fcitx5";
+			enable = true;
+			type = "fcitx5";
 			fcitx5 = {
 				waylandFrontend = true;
 				plasma6Support = true;

nixos/msi/modules/lean.nix

@@ -1,11 +1,11 @@
 { pkgs, config, ... }:
 
 {
+	home.sessionVariables = {
+		ELAN_HOME = "${config.xdg.cacheHome}/elan";
+	};
+
 	home.packages = with pkgs; [
 		elan
 	];
-
-	# home.sessionVariables = {
-	# 	ELAN_HOME = "${config.xdg.cacheHome}/elan";
-	# };
 }

nixos/msi/modules/ocaml.nix

@@ -1,6 +1,10 @@
-{ pkgs, ... }:
+{ pkgs, config, ... }:
 
 {
+	home.sessionVariables = {
+		OPAMROOT = "${config.xdg.cacheHome}/opam";
+	};
+
 	home.packages = with pkgs; [
 		ocaml
 		ocamlformat

nixos/msi/modules/rust.nix

@@ -0,0 +1,12 @@
+{ pkgs, config, ... }:
+
+{
+	home.sessionVariables = {
+		CARGO_HOME  = "${config.xdg.cacheHome}/cargo";
+		RUSTUP_HOME = "${config.xdg.cacheHome}/rustup";
+	};
+
+	home.packages = with pkgs; [
+		rust-analyzer
+	];
+}