helix: add module

tests/modules/programs/helix/default.nix

@@ -0,0 +1 @@
+{ helix-example-settings = ./example-settings.nix; }

tests/modules/programs/helix/example-settings.nix

@@ -0,0 +1,118 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  config = {
+    programs.helix = {
+      enable = true;
+
+      settings = {
+        theme = "base16";
+        lsp.display-messages = true;
+        keys.normal = {
+          space.space = "file_picker";
+          space.w = ":w";
+          space.q = ":q";
+        };
+      };
+
+      languages = [{
+        name = "rust";
+        auto-format = false;
+      }];
+
+      themes = {
+        base16 = let
+          transparent = "none";
+          gray = "#665c54";
+          dark-gray = "#3c3836";
+          white = "#fbf1c7";
+          black = "#282828";
+          red = "#fb4934";
+          green = "#b8bb26";
+          yellow = "#fabd2f";
+          orange = "#fe8019";
+          blue = "#83a598";
+          magenta = "#d3869b";
+          cyan = "#8ec07c";
+        in {
+          "ui.menu" = transparent;
+          "ui.menu.selected" = { modifiers = [ "reversed" ]; };
+          "ui.linenr" = {
+            fg = gray;
+            bg = dark-gray;
+          };
+          "ui.popup" = { modifiers = [ "reversed" ]; };
+          "ui.linenr.selected" = {
+            fg = white;
+            bg = black;
+            modifiers = [ "bold" ];
+          };
+          "ui.selection" = {
+            fg = black;
+            bg = blue;
+          };
+          "ui.selection.primary" = { modifiers = [ "reversed" ]; };
+          "comment" = { fg = gray; };
+          "ui.statusline" = {
+            fg = white;
+            bg = dark-gray;
+          };
+          "ui.statusline.inactive" = {
+            fg = dark-gray;
+            bg = white;
+          };
+          "ui.help" = {
+            fg = dark-gray;
+            bg = white;
+          };
+          "ui.cursor" = { modifiers = [ "reversed" ]; };
+          "variable" = red;
+          "variable.builtin" = orange;
+          "constant.numeric" = orange;
+          "constant" = orange;
+          "attributes" = yellow;
+          "type" = yellow;
+          "ui.cursor.match" = {
+            fg = yellow;
+            modifiers = [ "underlined" ];
+          };
+          "string" = green;
+          "variable.other.member" = red;
+          "constant.character.escape" = cyan;
+          "function" = blue;
+          "constructor" = blue;
+          "special" = blue;
+          "keyword" = magenta;
+          "label" = magenta;
+          "namespace" = blue;
+          "diff.plus" = green;
+          "diff.delta" = yellow;
+          "diff.minus" = red;
+          "diagnostic" = { modifiers = [ "underlined" ]; };
+          "ui.gutter" = { bg = black; };
+          "info" = blue;
+          "hint" = dark-gray;
+          "debug" = dark-gray;
+          "warning" = yellow;
+          "error" = red;
+        };
+      };
+    };
+
+    test.stubs.helix = { };
+
+    nmt.script = ''
+      assertFileContent \
+        home-files/.config/helix/config.toml \
+        ${./settings-expected.toml}
+      assertFileContent \
+        home-files/.config/helix/languages.toml \
+        ${./languages-expected.toml}
+      assertFileContent \
+        home-files/.config/helix/themes/base16.toml \
+        ${./theme-base16-expected.toml}
+    '';
+  };
+}

tests/modules/programs/helix/languages-expected.toml

@@ -0,0 +1,3 @@
+[[language]]
+auto-format = false
+name = "rust"

tests/modules/programs/helix/settings-expected.toml

@@ -0,0 +1,11 @@
+theme = "base16"
+
+[keys]
+[keys.normal]
+[keys.normal.space]
+q = ":q"
+space = "file_picker"
+w = ":w"
+
+[lsp]
+display-messages = true

tests/modules/programs/helix/theme-base16-expected.toml

@@ -0,0 +1,74 @@
+attributes = "#fabd2f"
+constant = "#fe8019"
+"constant.character.escape" = "#8ec07c"
+"constant.numeric" = "#fe8019"
+constructor = "#83a598"
+debug = "#3c3836"
+"diff.delta" = "#fabd2f"
+"diff.minus" = "#fb4934"
+"diff.plus" = "#b8bb26"
+error = "#fb4934"
+function = "#83a598"
+hint = "#3c3836"
+info = "#83a598"
+keyword = "#d3869b"
+label = "#d3869b"
+namespace = "#83a598"
+special = "#83a598"
+string = "#b8bb26"
+type = "#fabd2f"
+"ui.menu" = "none"
+variable = "#fb4934"
+"variable.builtin" = "#fe8019"
+"variable.other.member" = "#fb4934"
+warning = "#fabd2f"
+
+[comment]
+fg = "#665c54"
+
+[diagnostic]
+modifiers = ["underlined"]
+
+["ui.cursor"]
+modifiers = ["reversed"]
+
+["ui.cursor.match"]
+fg = "#fabd2f"
+modifiers = ["underlined"]
+
+["ui.gutter"]
+bg = "#282828"
+
+["ui.help"]
+bg = "#fbf1c7"
+fg = "#3c3836"
+
+["ui.linenr"]
+bg = "#3c3836"
+fg = "#665c54"
+
+["ui.linenr.selected"]
+bg = "#282828"
+fg = "#fbf1c7"
+modifiers = ["bold"]
+
+["ui.menu.selected"]
+modifiers = ["reversed"]
+
+["ui.popup"]
+modifiers = ["reversed"]
+
+["ui.selection"]
+bg = "#83a598"
+fg = "#282828"
+
+["ui.selection.primary"]
+modifiers = ["reversed"]
+
+["ui.statusline"]
+bg = "#3c3836"
+fg = "#fbf1c7"
+
+["ui.statusline.inactive"]
+bg = "#fbf1c7"
+fg = "#3c3836"