fetchFromGithub with submodules=true is broken

❯ nix-build -A p11-kit fetching git input 'git+https://github.com/ekala-project/nix-lib.git' error: … while evaluating an expression to select 'drvPath' on it at «internal»:1:552: … while evaluating strict at «internal»:1:552: (stack trace truncated; use '--show-trace' to show the full trace) error: attribute 'gitConfigFile' missing at /home/qweered/Projects/corepkgs/build-support/fetchgit/default.nix:99:34: 98| # GIT_CONFIG_GLOBAL (as a file) 99| gitConfigFile ? config.gitConfigFile, | ^ 100| # Additional stdenvNoCC.mkDerivation arguments. note: trace involved the following derivations: derivation 'p11-kit-0.25.10' derivation 'p11-kit-0.25.10-github-source' Blocks systemd