re-add helix, adding its cache

nixos/boxes/foryog/default.nix

@@ -1,4 +1,11 @@
-{ config, pkgs, inputs, lib, system, ... }: {
+{
+  config,
+  pkgs,
+  inputs,
+  lib,
+  system,
+  ...
+}: {
   networking.hostName = "foryog";
 
   imports = [
@@ -8,6 +15,7 @@
     ../../git
     ../../gnome
     ../../gui
+    ../../helix
     ../../mercurial
     ../../vim
     ../../zsh
@@ -18,8 +26,7 @@
   services.restic.backups.home-to-b2 = {
     repository = lib.mkForce "b2:cyplo-restic-foureighty:/";
   };
-  boot.kernelParams =
-    [ "initcall_debug" ''dyndbg="file suspend.c +p"'' "no_console_suspend" ];
+  boot.kernelParams = ["initcall_debug" ''dyndbg="file suspend.c +p"'' "no_console_suspend"];
   boot.tmp.cleanOnBoot = true;
   boot.binfmt.emulatedSystems = ["aarch64-linux"];
   boot.plymouth = {
@@ -44,7 +51,9 @@
   nixpkgs.config.allowUnfree = true;
 
   home-manager.users.cyryl = {...}: {
-    imports = [ ../../home-manager/programs/kitty.nix ];
+    imports = [
+      ../../home-manager/programs/kitty.nix
+    ];
     home.packages =
       (with inputs.nixpkgs-master.legacyPackages."${system}"; [bisq-desktop])
       ++ (with pkgs; [lutris])

nixos/helix/default.nix

@@ -0,0 +1,16 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  nix.settings = {
+    trusted-substituters = [
+      "https://helix.cachix.org"
+    ];
+    extra-trusted-public-keys = [
+      "helix.cachix.org-1:ejp9KQpR1FBI2onstMQ34yogDm4OgU2ru6lIwPvuCVs="
+    ];
+  };
+  home-manager.users.cyryl = {...}: {imports = [./home.nix];};
+}

nixos/helix/home.nix

@@ -0,0 +1,60 @@
+{
+  lib,
+  inputs,
+  system,
+  ...
+}: let
+  alejandra = lib.getExe inputs.alejandra.packages.${system}.default;
+  nil = lib.getExe inputs.nil.packages.${system}.default;
+  helixPackage = inputs.helix.packages.${system}.default;
+  helix = lib.getExe helixPackage;
+in {
+  home.sessionVariables = {
+    EDITOR = lib.mkForce helix;
+    VISUAL = lib.mkForce helix;
+  };
+  programs.zsh.sessionVariables = {
+    EDITOR = lib.mkForce helix;
+    VISUAL = lib.mkForce helix;
+  };
+  systemd.user.sessionVariables = {
+    EDITOR = lib.mkForce helix;
+    VISUAL = lib.mkForce helix;
+  };
+
+  programs.helix = {
+    enable = true;
+    package = helixPackage;
+    languages = {
+      language = [
+        {
+          name = "nix";
+          auto-format = true;
+          language-servers = ["nil"];
+          formatter = {
+            command = alejandra;
+            args = ["-q"];
+          };
+        }
+      ];
+      language-server.nil = {
+        command = nil;
+        config.nil.nix = {
+          maxMemoryMB = 8192;
+          flake.autoEvalInputs = true;
+        };
+      };
+    };
+    settings = {
+      theme = "solarized_dark";
+      editor = {
+        auto-save = true;
+        auto-pairs = false;
+        file-picker.hidden = false;
+        lsp.display-messages = true;
+        line-number = "relative";
+        soft-wrap.enable = true;
+      };
+    };
+  };
+}