doc: add section for writableTmpDirAsHomeHook

doc/hooks/index.md

@@ -48,6 +48,7 @@ unzip.section.md
 validatePkgConfig.section.md
 versionCheckHook.section.md
 waf.section.md
+writable-tmpdir-as-home-hook.section.md
 zig.section.md
 xcbuild.section.md
 xfce4-dev-tools.section.md

doc/hooks/writable-tmpdir-as-home-hook.section.md

@@ -0,0 +1,5 @@
+# writableTmpDirAsHomeHook {#writableTmpDirAsHomeHook}
+
+This setup hook provides a writable home directory for packages that require it.
+
+To use, just add the hook to the `nativeBuildInputs` of the package.

doc/redirects.json

@@ -1016,6 +1016,9 @@
   "tar-files": [
     "index.html#tar-files"
   ],
+  "writableTmpDirAsHomeHook": [
+    "index.html#writableTmpDirAsHomeHook"
+  ],
   "x86_64-darwin-26.05": [
     "release-notes.html#x86_64-darwin-26.05"
   ],