As stated in the release notes, NixOS 21.05 should update glibc to version 2.32. However, my xserver crashes after a system upgrade to 21.05, because the OpenGL intel iris driver wrongly links to 2.31. Here is the error log (from journalctl):
Jul 23 11:44:16 moxps nm-applet[1971]: libGL error: MESA-LOADER: failed to open iris: /nix/store/q53f5birhik4dxg3q3r2g5f324n7r5mc-glibc-2.31-74/lib/libc.so.6: version
GLIBC_2.32' not found (required by /run/opengl-driver/lib/dri/iris_dri.so) (search paths /run/opengl-driver/lib/dri) Jul 23 11:44:16 moxps nm-applet[1971]: libGL error: failed to load driver: iris Jul 23 11:44:16 moxps nm-applet[1971]: libGL error: MESA-LOADER: failed to open iris: /nix/store/q53f5birhik4dxg3q3r2g5f324n7r5mc-glibc-2.31-74/lib/libc.so.6: versionGLIBC_2.32’ not found (required by /run/opengl-driver/lib/dri/iris_dri.so) (search paths /run/opengl-driver/lib/dri)
Jul 23 11:44:16 moxps nm-applet[1971]: libGL error: failed to load driver: iris
/run/opengl-driver/lib/dri points to mesa-21.0 and ldd on that file confirms that it wrongly loads libc_2.31
Any idea what causes this wrong library-dependency?
While others seem to have the same issue (e.g. second-last comment in libinput module failing to load, wanted `GLIBC_2.32` but have `glibc 2.31` · Issue #101457 · NixOS/nixpkgs · GitHub), I did not find a thread dedicated to exactly this issue