fix(build): suppress debuginfo extraction in RPM spec files

The Linuxfabrik monitoring plugins RPM used to fail to install on
hosts that already had another RPM which shipped ELF binaries
built against the same upstream source - azure-cli being the
reported case, with the error

    Error: Transaction test error:
      file /usr/lib/.build-id/83/402b2ade... from install of
      linuxfabrik-monitoring-plugins conflicts with file from
      package azure-cli

Root cause: the spec files never set `%global debug_package
%{nil}`, so rpmbuild's default debuginfo extraction kicked in,
walked every `.so` in the bundled Python venv and installed a
`/usr/lib/.build-id/XX/YY...` symlink for each one into the
*main* package. The build-id hash is derived from the ELF file's
content, and two independent RPMs can legitimately produce the
same hash for the same upstream library - at which point dnf
refuses the install with a file conflict.

Fix: add `%global debug_package %{nil}` at the top of both the
EL and SLE spec files. This disables the automatic debuginfo
package generation, so no build-id symlinks are produced and the
main package only contains the plugin scripts, the sudoers file
and the venv. We don't ship a `-debuginfo` subpackage anyway, so
there is nothing else lost by this change.

Closes #979

Author: markuslf

CHANGELOG.md

@@ -126,6 +126,7 @@ Tools:
 
 Build, CI/CD:
 
+* RPM: `dnf install linuxfabrik-monitoring-plugins` no longer fails with a "conflicts with file from package azure-cli" (or any other package that ships a copy of libpython). The RPM used to install ELF build-id symlinks under `/usr/lib/.build-id/` into the main package, which collide file-for-file with similar symlinks shipped by other RPMs. Suppress the automatic debuginfo extraction in the spec files so those symlinks stay out of the main package ([#979](https://github.com/Linuxfabrik/monitoring-plugins/issues/979))
 * requirements.txt: add missing `setuptools` dependency (required by `pbr`)
 
 

build/linuxfabrik-monitoring-plugins.el.spec

@@ -7,6 +7,14 @@ URL:            https://github.com/Linuxfabrik/monitoring-plugins
 Vendor:         Linuxfabrik GmbH, Zurich, Switzerland
 Packager:       info@linuxfabrik.ch
 
+# Suppress the automatic debuginfo extraction. RPM would otherwise
+# install /usr/lib/.build-id/XX/YY... ELF build-id symlinks for every
+# shared object in the bundled venv into the main package, which can
+# collide file-for-file with other RPMs that happen to ship binaries
+# built from the same upstream source (e.g. azure-cli shipping its own
+# copy of libpython). See issue #979.
+%global debug_package %{nil}
+
 Source0:        https://github.com/Linuxfabrik/monitoring-plugins/archive/refs/tags/v%{version}.tar.gz
 Source1:        vendor.tar.gz
 

build/linuxfabrik-monitoring-plugins.sle.spec

@@ -7,6 +7,14 @@ URL:            https://github.com/Linuxfabrik/monitoring-plugins
 Vendor:         Linuxfabrik GmbH, Zurich, Switzerland
 Packager:       info@linuxfabrik.ch
 
+# Suppress the automatic debuginfo extraction. RPM would otherwise
+# install /usr/lib/.build-id/XX/YY... ELF build-id symlinks for every
+# shared object in the bundled venv into the main package, which can
+# collide file-for-file with other RPMs that happen to ship binaries
+# built from the same upstream source (e.g. azure-cli shipping its own
+# copy of libpython). See issue #979.
+%global debug_package %{nil}
+
 Source0:        https://github.com/Linuxfabrik/monitoring-plugins/archive/refs/tags/v%{version}.tar.gz
 Source1:        vendor.tar.gz