pycurl test failure

[mhwombat]

Describe the bug

pycurl fails to build

Possibly related: #78030 #77304

Steps To Reproduce

Steps to reproduce the behavior:

1. Set channel to nixos-unstable.
2. Even without any packages in environment.systemPackages...
3. Run sudo nixos-rebuild switch --upgrade

Expected behavior

Expected NixOS to rebuild.

Screenshots

If applicable, add screenshots to help explain your problem.

=========================== short test summary info ============================
FAILED tests/cadata_test.py::CaCertsTest::test_request_with_verifypeer - pycu...
FAILED tests/certinfo_test.py::CertinfoTest::test_getinfo_raw_certinfo - pycu...
FAILED tests/certinfo_test.py::CertinfoTest::test_request_with_certinfo - pyc...
FAILED tests/certinfo_test.py::CertinfoTest::test_request_without_certinfo - ...
===== 4 failed, 396 passed, 9 skipped, 16 deselected, 6 warnings in 22.97s =====
part1part2
error: builder for '/nix/store/z95037pm13nbfmqnixy1npgbap1a1zs9-python3.9-pycurl-7.45.1.drv' failed with exit code 1
error: 1 dependencies of derivation '/nix/store/m7l74pc8b0mckaw0vxnbnglzl360i0li-system-config-printer-1.5.15.drv' failed to build
error: 1 dependencies of derivation '/nix/store/3hwic17941944sbakd0br8b73r3x212j-dbus-1.drv' failed to build
error: 1 dependencies of derivation '/nix/store/8nvgagbghcx48mf6wwk0xmxplc4i62ha-etc.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-hplip-3.21.12.drv-1': Directory not empty
error: 1 dependencies of derivation '/nix/store/y626fx346i909pqb18p79pz1i7fkigrr-nixos-system-wombat11k-22.05pre367572.b6966d911da.drv' failed to build

Additional context

Add any other context about the problem here.

Notify maintainers

@alyssais
@SuperSandro2000
@r-ryantm

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

$ nix-shell -p nix-info --run "nix-info -m"
this path will be fetched (0.06 MiB download, 0.30 MiB unpacked):
  /nix/store/j4iivykw30p7318k9fjzqggdys9a2msh-bash-interactive-5.1-p16-dev
copying path '/nix/store/j4iivykw30p7318k9fjzqggdys9a2msh-bash-interactive-5.1-p16-dev' from 'https://cache.nixos.org'...
 - system: `"x86_64-linux"`
 - host os: `Linux 5.15.27, NixOS, 22.05 (Quokka), 22.05pre366144.bc4b9eef3ce`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.8.0pre20220322_d5d4d98`
 - channels(amy): `""`
 - channels(root): `"nixos"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

[bendlas]

Should be fixed by #166335