fix(modules/zsh): Avoid having to rely on the `~/.zshenv` file

We can use the `/etc/zshenv` file.

1 files changed, 89 insertions, 78 deletions

diff --git a/modules/by-name/zs/zsh/module.nix b/modules/by-name/zs/zsh/module.nix
index 833da126..cb1bb086 100644
--- a/modules/by-name/zs/zsh/module.nix
+++ b/modules/by-name/zs/zsh/module.nix
@@ -6,7 +6,8 @@
   ...
 }: let
   cfg = config.soispha.programs.zsh;
-  homeConfig = config.home-manager.users.soispha;
+
+  zDotDir = ".config/zsh";
 
   sourceFile = path: "source ${path}\n";
 in {
@@ -14,98 +15,108 @@ in {
     enable = lib.mkEnableOption "zsh";
   };
 
-  config.home-manager.users.soispha = lib.mkIf cfg.enable {
-    home.sessionPath = [];
+  config = lib.mkIf cfg.enable {
+    environment.variables = {
+      ZDOTDIR = "${config.home-manager.users.soispha.home.homeDirectory}/${zDotDir}";
+    };
+
+    home-manager.users.soispha = {
+      home.sessionPath = lib.mkForce [];
+
+      # This just includes a `source ~/.config/zsh/.zshenv`, because home-manger by-default
+      # can't access the root `/etc/zshenv`. We can and thus, we can remove this file.
+      home.file.".zshenv".enable = false;
 
-    programs.zsh = {
-      enable = true;
-      enableCompletion = true;
-      autosuggestion = {
+      programs.zsh = {
         enable = true;
-        strategy = [];
-      };
-      syntaxHighlighting.enable = true;
+        enableCompletion = true;
+        autosuggestion = {
+          enable = true;
+          strategy = [];
+        };
+        syntaxHighlighting.enable = true;
 
-      autocd = true;
+        autocd = true;
 
-      # Must be relative to the users home directory (for whatever reason)
-      # Thus no `${homeConfig.xdg.configHome}`
-      dotDir = ".config/zsh";
+        # Must be relative to the users home directory (for whatever reason)
+        # Thus no `${homeConfig.xdg.configHome}`
+        dotDir = zDotDir;
 
-      # TODO: Remove the whole history and replace it completely with `atuin` <2024-10-21>
-      history = {
-        path = "/dev/null";
-        # save = 0; # number of lines to save
-        # size = 0; # number of lines to keep
-        # share = false; # share between sessions
-      };
+        # TODO: Remove the whole history and replace it completely with `atuin` <2024-10-21>
+        history = {
+          path = "/dev/null";
+          # save = 0; # number of lines to save
+          # size = 0; # number of lines to keep
+          # share = false; # share between sessions
+        };
 
-      loginExtra =
-        # bash
-        ''
-          setopt AUTO_CD
-          setopt AUTO_PUSHD
-          setopt CHASE_DOTS
+        loginExtra =
+          # bash
+          ''
+            setopt AUTO_CD
+            setopt AUTO_PUSHD
+            setopt CHASE_DOTS
 
-          setopt ALWAYS_TO_END
+            setopt ALWAYS_TO_END
 
-          setopt EXTENDED_HISTORY
-          setopt HIST_ALLOW_CLOBBER
-          setopt HIST_VERIFY
-          setopt HIST_FCNTL_LOCK
-          setopt APPEND_HISTORY
+            setopt EXTENDED_HISTORY
+            setopt HIST_ALLOW_CLOBBER
+            setopt HIST_VERIFY
+            setopt HIST_FCNTL_LOCK
+            setopt APPEND_HISTORY
 
-          setopt DVORAK
-          setopt CORRECT
+            setopt DVORAK
+            setopt CORRECT
 
-          setopt PROMPT_SUBST
-          setopt TRANSIENT_RPROMPT # maybe?
+            setopt PROMPT_SUBST
+            setopt TRANSIENT_RPROMPT # maybe?
 
-          setopt COMBINING_CHARS
-          setopt VI
-        '';
+            setopt COMBINING_CHARS
+            setopt VI
+          '';
 
-      initExtraFirst =
-        sourceFile ./config/zsh-init.zsh
-        + ''
-          SHELL_LIBRARY_VERSION="2.1.2" source ${shell_library.rawLib.${system}}
-        '';
+        initExtraFirst =
+          sourceFile ./config/zsh-init.zsh
+          + ''
+            SHELL_LIBRARY_VERSION="2.1.2" source ${shell_library.rawLib.${system}}
+          '';
 
-      initExtra = let
-        start = lib.modules.mkBefore (
-          # NOTE: This must be before the insult, as we otherwise override the previous handler <2024-02-28>
-          sourceFile ./config/command_not_found/command_not_found.sh
-          + sourceFile ./config/command_not_found/command_not_found_insult.sh
-          + sourceFile ./config/custom_cursor.zsh
-          + sourceFile ./config/edit_command_line.zsh
-          + sourceFile ./plugins/zsh-history-substring-search.zsh
-        );
-        end = lib.modules.mkAfter (
-          sourceFile ./config/keymaps_start.zsh
-          + sourceFile ./config/keymaps/command.zsh
-          + sourceFile ./config/keymaps/emacs.zsh
-          + sourceFile ./config/keymaps/isearch.zsh
-          + sourceFile ./config/keymaps/vicmd.zsh
-          + sourceFile ./config/keymaps/viins.zsh
-          + sourceFile ./config/keymaps/viopp.zsh
-          + sourceFile ./config/keymaps/visual.zsh
-          + sourceFile ./config/keymaps_end.zsh
-        );
-      in
-        lib.modules.mkMerge
-        [
-          start
-          end
-        ];
+        initExtra = let
+          start = lib.modules.mkBefore (
+            # NOTE: This must be before the insult, as we otherwise override the previous handler <2024-02-28>
+            sourceFile ./config/command_not_found/command_not_found.sh
+            + sourceFile ./config/command_not_found/command_not_found_insult.sh
+            + sourceFile ./config/custom_cursor.zsh
+            + sourceFile ./config/edit_command_line.zsh
+            + sourceFile ./plugins/zsh-history-substring-search.zsh
+          );
+          end = lib.modules.mkAfter (
+            sourceFile ./config/keymaps_start.zsh
+            + sourceFile ./config/keymaps/command.zsh
+            + sourceFile ./config/keymaps/emacs.zsh
+            + sourceFile ./config/keymaps/isearch.zsh
+            + sourceFile ./config/keymaps/vicmd.zsh
+            + sourceFile ./config/keymaps/viins.zsh
+            + sourceFile ./config/keymaps/viopp.zsh
+            + sourceFile ./config/keymaps/visual.zsh
+            + sourceFile ./config/keymaps_end.zsh
+          );
+        in
+          lib.modules.mkMerge
+          [
+            start
+            end
+          ];
 
-      localVariables = {
-        HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND = "bg=cyan,fg=white";
-        HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND = "fg=red,underline,standout,bold";
-      };
+        localVariables = {
+          HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND = "bg=cyan,fg=white";
+          HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND = "fg=red,underline,standout,bold";
+        };
 
-      shellAliases = {
-        ll = ". ll";
-        lm = ". lm";
+        shellAliases = {
+          ll = ". ll";
+          lm = ". lm";
+        };
       };
     };
   };