build-support: add writableTmpDirAsHomeHook hook

NixOS · Jan 11, 2025 · 9e45c4c · 9e45c4c
1 parent 3522886
commit 9e45c4c
Show file tree

Hide file tree

Showing 2 changed files with 21 additions and 0 deletions.
diff --git a/pkgs/build-support/setup-hooks/writable-tmpdir-as-home.sh b/pkgs/build-support/setup-hooks/writable-tmpdir-as-home.sh
@@ -0,0 +1,14 @@
+# shellcheck shell=bash
+# This setup hook set the HOME environment variable to a temporary directory.
+
+export HOME
+
+writableTmpDirAsHome () {
+    if [[ ! -w "$HOME" ]]; then
+        HOME=$(mktemp -d)
+        export HOME
+    fi
+}
+
+# shellcheck disable=SC2154
+addEnvHooks "$targetOffset" writableTmpDirAsHome
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
@@ -866,6 +866,13 @@ with pkgs;
     name = "setup-debug-info-dirs-hook";
   } ../build-support/setup-hooks/setup-debug-info-dirs.sh;
 
+  writableTmpDirAsHomeHook = callPackage (
+    { makeSetupHook }:
+    makeSetupHook {
+      name = "writable-tmpdir-as-home-hook";
+    } ../build-support/setup-hooks/writable-tmpdir-as-home.sh
+  ) { };
+
   useOldCXXAbi = makeSetupHook {
     name = "use-old-cxx-abi-hook";
   } ../build-support/setup-hooks/use-old-cxx-abi.sh;