ne: add module

Added a simple module to place configuration files for ne: the nice
editor.

PR #1336

tests/modules/programs/ne/default.nix

@@ -0,0 +1,4 @@
+{
+  ne-defprefs = ./defprefs.nix;
+  ne-passthroughs = ./passthroughs.nix;
+}

tests/modules/programs/ne/defprefs.nix

@@ -0,0 +1,30 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  defpref = ''
+    defined through defaultPreferences
+  '';
+  autopref = ''
+    defined through automaticPreferences
+  '';
+in {
+  config = {
+    programs.ne = {
+      enable = true;
+      defaultPreferences = defpref;
+      automaticPreferences.".default" = autopref;
+    };
+    nmt = {
+      description =
+        "Check that it gracefully handles the case of both defaultPreferences and automaticPreferences.'.default' being set, defaulting to the former.";
+      script = ''
+        assertFileExists home-files/.ne/.default#ap
+        assertFileContent home-files/.ne/.default#ap ${
+          builtins.toFile "defpref" defpref
+        }
+      '';
+
+    };
+  };
+}

tests/modules/programs/ne/passthroughs.nix

@@ -0,0 +1,70 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  # Samples taken from the ne manual.
+  keybindings = ''
+    SEQ  "\x1b[1;5D"  14A
+    KEY  14A          HELP
+  '';
+
+  menus = ''
+    MENU "File"
+    ITEM "Open...     ^O" Open
+    ITEM "Close         " Close
+    ITEM "DoIt          " Macro DoIt
+  '';
+
+  virtualExtensions = ''
+    sh   1  ^#!\s*/.*\b(bash|sh|ksh|zsh)\s*
+    csh  1  ^#!\s*/.*\b(csh|tcsh)\s*
+    pl   1  ^#!\s*/.*\bperl\b
+    py   1  ^#!\s*/.*\bpython[0-9]*\s*
+    rb   1  ^#!\s*/.*\bruby\s*
+    xml  1  ^<\?xml
+  '';
+
+  automaticPreferences = {
+    nix = ''
+      TAB 0
+      TS 2
+    '';
+    js = ''
+      TS 4
+    '';
+  };
+
+  checkFile = filename: contents: ''
+    assertFileExists home-files/.ne/${filename}
+    assertFileContent home-files/.ne/${filename} ${
+      builtins.toFile "checkFile" contents
+    }
+  '';
+
+in {
+  config = {
+    programs.ne = {
+      enable = true;
+      inherit keybindings;
+      inherit menus;
+      inherit virtualExtensions;
+      inherit automaticPreferences;
+    };
+
+    nmt = {
+      description = "Check that configuration files are correctly written";
+      script = concatStringsSep "\n" [
+        (checkFile ".keys" keybindings)
+        (checkFile ".extensions" virtualExtensions)
+        (checkFile ".menus" menus)
+
+        # Generates a check command for each entry in automaticPreferences.
+        (concatStringsSep "\n" (mapAttrsToList
+          (extension: contents: checkFile "${extension}#ap" contents)
+          automaticPreferences))
+      ];
+    };
+  };
+}