fontconfig: enable config files by default

This commit makes the `fonts.fontconfig.configFile.<name>.enable` option
true by default which matches the behaviour of `home.file` and the like.

modules/misc/fontconfig.nix

@@ -16,11 +16,35 @@ let
 
   inherit (config.home) profileDirectory;
 
+  globalConfig = config;
   fontConfigFileType = lib.types.submodule (
     { name, ... }:
     {
       options = {
-        enable = lib.mkEnableOption "Whether this font config file should be generated.";
+        enable = lib.mkOption {
+          description = ''
+            Whether this file should be generated. This option allows specific
+            files to be disabled.
+          '';
+          type = lib.types.bool;
+          inherit
+            (lib.hm.deprecations.mkStateVersionOptionDefault {
+              inherit (globalConfig.home) stateVersion;
+              since = "26.11";
+              optionPath = [
+                "fonts"
+                "fontconfig"
+                "configFile"
+                name
+                "enable"
+              ];
+              legacy.value = false;
+              current.value = true;
+            })
+            default
+            defaultText
+            ;
+        };
         text = lib.mkOption {
           type = lib.types.nullOr lib.types.lines;
           default = null;

tests/modules/misc/fontconfig/default.nix

@@ -6,4 +6,6 @@
   fontconfig-default-rendering = ./default-rendering.nix;
   fontconfig-custom-rendering = ./custom-rendering.nix;
   fontconfig-extra-config-files = ./extra-config-files.nix;
+
+  fontconfig-old-default-configFile-toggle = ./old-default-configFile-toggle.nix;
 }

tests/modules/misc/fontconfig/extra-config-files.nix

@@ -1,33 +1,53 @@
+{ lib, ... }:
+
 let
-  sampleTextContent = "hello world";
   fcConfD = "home-files/.config/fontconfig/conf.d";
+  sampleText = "hello world";
+  sampleSource = builtins.toFile "fontconfig-source" ''
+    <?xml version="1.0"?>
+    <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+    <fontconfig>
+      ...
+    </fontconfig>
+  '';
 in
 {
+  home.stateVersion = lib.trivial.release;
+
   fonts.fontconfig = {
     enable = true;
     configFile = {
-      text-label-test = {
-        enable = true;
-        label = "sample-text-config";
-        text = sampleTextContent;
-        priority = 55;
+      disabled = {
+        enable = false;
+        text = "";
       };
-      source-nolabel-test = {
-        enable = true;
-        source = ./sample-extra-config.conf;
+      label = {
+        label = "custom_label";
+        text = "";
       };
+      priority = {
+        priority = 37;
+        text = "";
+      };
+      text.text = sampleText;
+      source.source = sampleSource;
     };
   };
 
   nmt.script = ''
     assertDirectoryExists ${fcConfD}
 
-    assertFileExists  ${fcConfD}/55-hm-sample-text-config.conf
-    assertFileContent ${fcConfD}/55-hm-sample-text-config.conf \
-      ${builtins.toFile "sample-text-config" sampleTextContent}
+    assertPathNotExists ${fcConfD}/90-hm-disabled.conf
 
-    assertFileExists  ${fcConfD}/90-hm-source-nolabel-test.conf
-    assertFileContent ${fcConfD}/90-hm-source-nolabel-test.conf \
-      ${./sample-extra-config.conf}
+    assertFileExists ${fcConfD}/90-hm-custom_label.conf
+
+    assertFileExists ${fcConfD}/37-hm-priority.conf
+
+    assertFileExists  ${fcConfD}/90-hm-text.conf
+    assertFileContent ${fcConfD}/90-hm-text.conf \
+      ${builtins.toFile "sample-text-config" sampleText}
+
+    assertFileExists  ${fcConfD}/90-hm-source.conf
+    assertFileContent ${fcConfD}/90-hm-source.conf ${sampleSource}
   '';
 }

tests/modules/misc/fontconfig/old-default-configFile-toggle.nix

@@ -0,0 +1,18 @@
+let
+  fcConfD = "home-files/.config/fontconfig/conf.d";
+in
+{
+  home.stateVersion = "26.05"; # <= 26.11
+
+  fonts.fontconfig = {
+    enable = true;
+    configFile.implicitly-disabled.text = "foo";
+  };
+
+  nmt.script = ''
+    assertFileExists ${fcConfD}/10-hm-fonts.conf
+    assertFileExists ${fcConfD}/52-hm-default-fonts.conf
+
+    assertPathNotExists ${fcConfD}/90-hm-implicitly-disabled.conf
+  '';
+}

tests/modules/misc/fontconfig/sample-extra-config.conf

@@ -1,14 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
-
-<fontconfig>
-	<description>Disable anti-aliasing for Tamzen since it is a bitmap font</description>
-	<match target="pattern">
-		<test name="family" compare="eq" qual="any">
-			<string>Tamzen</string>
-		</test>
-		<edit name="antialias" mode="assign">
-			<bool>false</bool>
-		</edit>
-	</match>
-</fontconfig>