prettier-plugin-astro: set HOME in build to avoid pnpm hook failure

- Export HOME=$TMPDIR in preConfigure so pnpm config doesn’t fail on /homeless-shelter

docs/manual/release-notes/rl-0.9.md

@@ -57,6 +57,11 @@
 
 ## Changelog {#sec-release-0-9-changelog}
 
+[midischwarz12](https://github.com/midischwarz12):
+
+- Changed the prettier-plugin-astro build to use `writableTmpDirAsHomeHook` to
+  avoid pnpm hook failures in sandboxed builds.
+
 [taylrfnt](https://github.com/taylrfnt)
 
 - Introduce a `darwinModule` option for Darwin users. The ergonomics of

flake/pkgs/by-name/prettier-plugin-astro/package.nix

@@ -6,6 +6,7 @@
   pnpmConfigHook,
   fetchPnpmDeps,
   pins,
+  writableTmpDirAsHomeHook,
 }: let
   pin = pins.prettier-plugin-astro;
 in
@@ -28,6 +29,7 @@ in
 
     nativeBuildInputs = [
       nodejs
+      writableTmpDirAsHomeHook
       (pnpmConfigHook.overrideAttrs {
         propagatedBuildInputs = [pnpm_9];
       })