packit: Simplify configuration

(cherry picked from commit 86a6d7cc5a4798e614c50ed02c751e71f74637f9)

.packit.yml

@@ -1,6 +1,5 @@
 ---
-# vi:ts=2 sw=2 et:
-#
+# SPDX-License-Identifier: LGPL-2.1-or-later
 # Docs: https://packit.dev/docs/
 
 specfile_path: .packit_rpm/systemd.spec
@@ -8,8 +7,6 @@ files_to_sync:
   - .packit.yml
   - src: .packit_rpm/systemd.spec
     dest: systemd.spec
-upstream_package_name: systemd
-downstream_package_name: systemd
 # `git describe` returns in systemd's case 'v245-xxx' which breaks RPM version
 # detection (that expects 245-xxxx'). Let's tweak the version string accordingly
 upstream_tag_template: "v{version}"
@@ -25,25 +22,11 @@ actions:
 
   post-upstream-clone:
     # Use the Fedora Rawhide specfile
-    - "git clone https://src.fedoraproject.org/rpms/systemd .packit_rpm --depth=1"
-    # Drop the "sources" file so rebase-helper doesn't think we're a dist-git
-    - "rm -fv .packit_rpm/sources"
-    # Drop backported patches from the specfile, but keep the downstream-only ones
-    # - Patch(0000-0499): backported patches from upstream
-    # - Patch0500-9999: downstream-only patches
-    - "sed -ri '/^Patch(0[0-4]?[0-9]{0,2})?\\:.+\\.patch/d' .packit_rpm/systemd.spec"
-    # Build the RPM with --werror. Even though --werror doesn't work in all
-    # cases (see [0]), we can't use -Dc_args=/-Dcpp_args= here because of the
-    # RPM hardening macros, that use $CFLAGS/$CPPFLAGS (see [1]).
-    #
-    # [0] https://github.com/mesonbuild/meson/issues/7360
-    # [1] https://github.com/systemd/systemd/pull/18908#issuecomment-792250110
-    - 'sed -i "/^CONFIGURE_OPTS=(/a--werror" .packit_rpm/systemd.spec'
-    # Ignore unpackaged standalone binaries
-    - "sed -i 's/assert False,.*/pass/' .packit_rpm/split-files.py"
-    # Temporarily add libarchive-devel build dep and libarchive runtime dep
-    # until the change propagates to Rawhide's specfile
-    - "sed -ri '0,/^BuildRequires: .+$/s//&\\nBuildRequires: libarchive-devel\\nRequires: libarchive/' .packit_rpm/systemd.spec"
+    - git clone https://src.fedoraproject.org/rpms/systemd .packit_rpm --depth=1
+    - bash -c 'echo "%bcond upstream 1" > .packit_rpm/systemd.spec.new'
+    - bash -c 'echo "%define meson_extra_configure_options --werror" >> .packit_rpm/systemd.spec.new'
+    - bash -c 'cat .packit_rpm/systemd.spec >> .packit_rpm/systemd.spec.new'
+    - mv .packit_rpm/systemd.spec.new .packit_rpm/systemd.spec
 
 jobs:
 - job: copr_build