Fix missing "*.spack*" files in views (#30980)

All files/dirs containing ".spack" anywhere their name were ignored when
generating a spack view.

For example, this happened with the 'r' package.

1 files changed, 46 insertions, 0 deletions

diff --git a/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py b/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py
new file mode 100644
index 0000000000..3342de9899
--- /dev/null
+++ b/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py
@@ -0,0 +1,46 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+import os.path
+
+from spack.package import *
+
+
+class ViewNotIgnored(Package):
+    """Install files that should not be ignored by spack."""
+
+    homepage = "http://www.spack.org"
+    url = "http://www.spack.org/downloads/aml-1.0.tar.gz"
+    has_code = False
+
+    version("0.1.0", sha256="cc89a8768693f1f11539378b21cdca9f0ce3fc5cb564f9b3e4154a051dcea69b")
+
+    install_test_files = [
+        "foo.spack",
+        ".spack.bar",
+        "aspack",
+        "bin/foo.spack",
+        "bin/.spack.bar",
+        "bin/aspack",
+    ]
+
+    def install(self, spec, prefix):
+        for test_file in self.install_test_files:
+            path = os.path.join(prefix, test_file)
+            mkdirp(os.path.dirname(path))
+            with open(path, "w") as f:
+                f.write(test_file)
+
+    @classmethod
+    def assert_installed(cls, prefix):
+        for test_file in cls.install_test_files:
+            path = os.path.join(prefix, test_file)
+            assert os.path.exists(path), "Missing installed file: {}".format(path)
+
+    @classmethod
+    def assert_not_installed(cls, prefix):
+        for test_file in cls.install_test_files:
+            path = os.path.join(prefix, test_file)
+            assert not os.path.exists(path), "File was not uninstalled: {}".format(path)