[python] Fix version in distribution

RPM build tools now check if the python distribution has valid version.

Signed-off-by: Wojtek Porczyk <[email protected]>

python/graminelibos.dist-info/meson.build

@@ -1,9 +1,16 @@
 install_dir = python3_platlib / 'graminelibos.dist-info'
 conf = configuration_data()
 conf.set('NAME', meson.project_name())
-conf.set('VERSION', meson.project_version())
 conf.set('LICENSE', ', '.join(meson.project_license()))
 
+# VERSION needs to comply with the official specification, which is restrictive:
+# https://packaging.python.org/en/latest/specifications/version-specifiers/
+# In Gramine, we use X.Y, X.Y.Z, X.Y~rcN and X.Ypost~UNRELEASED, which is
+# exactly what we want for distro packages (~ sorts negative), but can't be used
+# for python distributions.
+conf.set('VERSION',
+    meson.project_version().replace('~UNRELEASED', '').replace('~', ''))
+
 # https://packaging.python.org/en/latest/specifications/core-metadata/
 configure_file(
     input: 'METADATA.in',