build: Include PKG-INFO, egg-info etc. in dist tarballs again

twine requires at least PKG-INFO, and if we're generating that, we
might as well have everything.

Signed-off-by: Simon McVittie <smcv@collabora.com>

3 files changed, 55 insertions, 2 deletions

diff --git a/Makefile.am b/Makefile.am
index 49bac1d..8738d57 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -52,8 +52,8 @@ EXTRA_DIST = \
 	tools/check-c-style.sh \
 	tools/check-coding-style.mk \
 	tools/check-py-style.sh \
-	tools/check-whitespace.sh
-	tools/ci-build.sh \
+	tools/check-whitespace.sh \
+	tools/generate-pkginfo.py \
 	$(NULL)
 
 # === C code ===
@@ -370,13 +370,22 @@ $(patsubst %,%.test,$(test_programs)): %.test: Makefile
 
 dist-hook:
 	echo $(VERSION) > $(distdir)/.version
+	$(MKDIR_P) $(distdir)/dbus_python.egg-info
 	touch $(distdir)/MANIFEST
 	touch $(distdir)/MANIFEST.in
+	touch $(distdir)/dbus_python.egg-info/SOURCES.txt
+	$(PYTHON) $(distdir)/tools/generate-pkginfo.py $(VERSION) $(distdir)/PKG-INFO
+	echo > $(distdir)/dbus_python.egg-info/dependency_links.txt
+	echo _dbus_bindings > $(distdir)/dbus_python.egg-info/top_level.txt
+	echo _dbus_glib_bindings >> $(distdir)/dbus_python.egg-info/top_level.txt
+	echo dbus >> $(distdir)/dbus_python.egg-info/top_level.txt
+	cp $(distdir)/PKG-INFO $(distdir)/dbus_python.egg-info/PKG-INFO
 	( cd $(distdir) && find -type d -o -print ) | \
 		LC_ALL=C sort | \
 		$(SED) -e 's|^\./||' \
 		> $(distdir)/MANIFEST
 	sed -e 's/.*/include &/' < $(distdir)/MANIFEST > $(distdir)/MANIFEST.in
+	cp $(distdir)/MANIFEST $(distdir)/dbus_python.egg-info/SOURCES.txt
 
 maintainer-upload:
 	rsync -tvpP --chmod=ugo=r $(DIST_ARCHIVES) $(DIST_ARCHIVES:%=%.asc) \
diff --git a/tools/ci-install.sh b/tools/ci-install.sh
index ce9864b..f233369 100755
--- a/tools/ci-install.sh
+++ b/tools/ci-install.sh
@@ -162,6 +162,24 @@ case "$ci_distro" in
                 have_system_meson=true
                 ;;
         esac
+
+        # Needed for distcheck
+        case "$ci_suite" in
+            (buster|focal|bullseye)
+                runuser -u user -- \
+                    "${dbus_ci_system_python-python3}" -m pip install --user \
+                    pyproject_metadata \
+                    tomli \
+                    ${NULL}
+                ;;
+
+            (*)
+                $sudo apt-get -qq -y install \
+                    python3-pyproject-metadata \
+                    python3-tomli \
+                    ${NULL}
+                ;;
+        esac
         ;;
 
     (*)
diff --git a/tools/generate-pkginfo.py b/tools/generate-pkginfo.py
new file mode 100755
index 0000000..9e7df21
--- /dev/null
+++ b/tools/generate-pkginfo.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+# Copyright 2021 Quansight, LLC
+# Copyright 2021 Filipe Laíns
+# Copyright 2022 Collabora Ltd.
+# SPDX-License-Identifier: MIT
+
+# Generate a PKG-INFO file using a very small subset of meson-python.
+
+import sys
+from pathlib import Path
+
+import pyproject_metadata
+import tomli
+
+if __name__ == '__main__':
+    top_srcdir = Path(__file__).parent.parent
+
+    with open(top_srcdir / 'pyproject.toml') as reader:
+        conf = tomli.loads(reader.read())
+
+    meta = pyproject_metadata.StandardMetadata.from_pyproject(conf, top_srcdir)
+    meta.version = sys.argv[1]
+    core_metadata = meta.as_rfc822()
+
+    with open(sys.argv[2], 'wb') as writer:
+        writer.write(bytes(core_metadata))