Usage of `git` conflicts with the Perl-less profile

[StarryReverie]

Hi there! Thank you developers for making such an awesome project.

Recently I'd like to enable the usage of Perl-less activation for my homelab running MicroVM clusters. By inspecting Nixpkgs, I learnt that this can be done by adding:

{
  imports = [
    (modulesPath + "profiles/perlless.nix")
  ]
}

As I run sudo nixos-rebuild switch, the build process, however, failed with the following error message:

nixos-system-starrynix-homelab> System closure /nix/store/2zm8aiip3i5lalan63hqg333wv7qfbsl-nixos-system-starrynix-homelab-25.11.20251025.6a08e6b contains the following disallowed paths:
nixos-system-starrynix-homelab> /nix/store/0n4pjifqyzsscnm28vsx99nvzi7rvjkp-perl5.40.0-HTTP-Cookies-6.10
nixos-system-starrynix-homelab> /nix/store/1gsknjqa93qli2nw68cc7gmgxsfhhnim-perl5.40.0-HTML-Tagset-3.20
nixos-system-starrynix-homelab> /nix/store/1id789x3gwg5aan8diyqnbrqjdifmwif-perl5.40.0-Digest-HMAC-1.05
nixos-system-starrynix-homelab> /nix/store/2j1zjih276h725w84hcscn6ahkm6a0px-perl5.40.0-libwww-perl-6.72
nixos-system-starrynix-homelab> /nix/store/4smyg8r1inrfyqs4knyds2371nhhaxxi-perl5.40.0-FCGI-0.82
nixos-system-starrynix-homelab> /nix/store/4vrla4iysq1s3a4x36vrrl19ch5jzqnz-perl5.40.0-HTTP-Negotiate-6.01
nixos-system-starrynix-homelab> /nix/store/53s04486vl8mp5p8y14zk90wdh8z9ygi-perl5.40.0-HTTP-CookieJar-0.014
nixos-system-starrynix-homelab> /nix/store/5acqp6qajgihjkah3wdjwvyfz6q0namh-perl5.40.0-Mozilla-CA-20230821
nixos-system-starrynix-homelab> /nix/store/5bsnkm7mi10gszpdxxhmr7h7bx1bhdin-perl5.40.0-Test-RequiresInternet-0.05
nixos-system-starrynix-homelab> /nix/store/5mmprpajlg6gpbwrmsimn97833gjm8ki-perl5.40.0-Net-SMTP-SSL-1.04
nixos-system-starrynix-homelab> /nix/store/7cdwccydj3hfvvgbhfp712a81hsi19c4-perl5.40.0-Net-SSLeay-1.92
nixos-system-starrynix-homelab> /nix/store/7g8p6p3r211kl932j9j451qzgrw0khrg-perl5.40.0-LWP-MediaTypes-6.04
nixos-system-starrynix-homelab> /nix/store/8s0dasm0k9273dcvg1mdg48zk5vbk3dp-perl5.40.0-Clone-0.46
nixos-system-starrynix-homelab> /nix/store/bqnrzkrn19dkdlzvw7dcanryzj8wk21d-perl5.40.0-Test-Fatal-0.017
nixos-system-starrynix-homelab> /nix/store/c7xw73aks4z7p23y1hhixhhf25cn43i0-perl5.40.0-HTML-TagCloud-0.38
nixos-system-starrynix-homelab> /nix/store/f91yxyy6s6kvw7dfhp0jyg1jfs4shxmi-perl5.40.0-URI-5.21
nixos-system-starrynix-homelab> /nix/store/fcdpmsg6wbfvc8g1qvixgha6f6iys314-perl5.40.0-HTTP-Date-6.06
nixos-system-starrynix-homelab> /nix/store/ffiflghs8d650s3jiihks23p3h1z5y4g-perl5.40.0-Net-HTTP-6.23
nixos-system-starrynix-homelab> /nix/store/frsgwsg9sdhm9zx9ngw9b8xndawb32fj-perl5.40.0-IO-Socket-SSL-2.083
nixos-system-starrynix-homelab> /nix/store/g7k6fv5hdrklcz8zs4y84w55f2jbbfxf-perl5.40.0-Test-Needs-0.002010
nixos-system-starrynix-homelab> /nix/store/gpr6l2dy4pfprnhq87v9di0izjqyh9fn-perl5.40.0-HTTP-Daemon-6.16
nixos-system-starrynix-homelab> /nix/store/gqigfxm9b626q8z3rn592c9qjk9p9ypf-perl5.40.0-TimeDate-2.33
nixos-system-starrynix-homelab> /nix/store/i4h5jgmrbzdka66hxycfsk095f1y9jbd-perl5.40.0-IO-HTML-1.004
nixos-system-starrynix-homelab> /nix/store/kifsc9q6vlw01ic5nyk1gipnvmy1iij2-perl-5.40.0
nixos-system-starrynix-homelab> /nix/store/lqma0j2l853wm19r3rh700fkygvgp7yc-perl5.40.0-TermReadKey-2.38
nixos-system-starrynix-homelab> /nix/store/pbxldghfdd47m6mz1j7jail113wnwb44-perl5.40.0-WWW-RobotRules-6.02
nixos-system-starrynix-homelab> /nix/store/pjmrs6vng4fi0vdr7dzdwhhg4ri8lw9v-perl5.40.0-File-Listing-6.16
nixos-system-starrynix-homelab> /nix/store/q0bi4qxmaya464l3qswly473nyhip4j5-perl5.40.0-CGI-Fast-2.16
nixos-system-starrynix-homelab> /nix/store/qh64w3f3hy3dpq90w8iml899a1iw1dz6-perl5.40.0-Encode-Locale-1.05
nixos-system-starrynix-homelab> /nix/store/qmhailwnhm07cac86v385kxzj49aks3m-perl5.40.0-Authen-SASL-2.1900
nixos-system-starrynix-homelab> /nix/store/qsgq00zmphdyjplwrvjiidsckgb5k4fa-perl5.40.0-FCGI-ProcManager-0.28
nixos-system-starrynix-homelab> /nix/store/x64fqg9f0is2mhdxai2mjsy6a1vs3jgq-perl5.40.0-libnet-3.15
nixos-system-starrynix-homelab> /nix/store/x9613s5v2y6x9qlxjfjb27693mbdknxs-perl5.40.0-Crypt-URandom-0.54
nixos-system-starrynix-homelab> /nix/store/xpg5nkdxnpccdr4fylwd0iwv28kv89sd-perl5.40.0-HTML-Parser-3.81
nixos-system-starrynix-homelab> /nix/store/y81syny5q4647y0pfgpfjxkq7xyhzpmg-perl5.40.0-Try-Tiny-0.31
nixos-system-starrynix-homelab> /nix/store/ysqbaxvvzvn0llccf1wjxyy2dqzns85h-perl5.40.0-CGI-4.59
nixos-system-starrynix-homelab> /nix/store/zincfiichkh6y7dk8mwsgljjhljbwfy6-perl5.40.0-HTTP-Message-6.45
error: Cannot build '/nix/store/18jimdkdskajxi4bx28br1fn0nijcxns-nixos-system-starrynix-homelab-25.11.20251025.6a08e6b.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2zm8aiip3i5lalan63hqg333wv7qfbsl-nixos-system-starrynix-homelab-25.11.20251025.6a08e6b
Command 'nix --extra-experimental-features 'nix-command flakes' build --print-out-paths '.#nixosConfigurations."homelab".config.system.build.toplevel' --print-build-logs --no-link' returned non-zero exit status 1.

I ran nix why-depends <my-nixos-generation> <perl-package> and got the following output:

nix why-depends /nix/store/0738dllmzk82x2bdfhf55xhs5xry5ccp-nixos-system-starrynix-homelab-25.11.20251025.6a08e6b /nix/store/zincfiichkh6y7dk8mwsgljjhljbwfy6-perl5.40.0-HTTP-Message-6.45
/nix/store/0738dllmzk82x2bdfhf55xhs5xry5ccp-nixos-system-starrynix-homelab-25.11.20251025.6a08e6b
└───/nix/store/j9jbn5czw771ck748cp6b9c93fzj61a4-system-path
    └───/nix/store/lqyydad9sisqd9rpyrh6b4rbjcjw670b-microvm
        └───/nix/store/60440kg5c51rrlpinkk2rkg020q5q6kv-git-2.51.0
            └───/nix/store/2j1zjih276h725w84hcscn6ahkm6a0px-perl5.40.0-libwww-perl-6.72
                └───/nix/store/zincfiichkh6y7dk8mwsgljjhljbwfy6-perl5.40.0-HTTP-Message-6.45

which indicates that microvm.nix indirectly depends on Perl through Git.

Two references to git are found at

microvm.nix/pkgs/build-microvm.nix

Line 10 in 42628f7

PATH=${lib.makeBinPath [ coreutils git nix ]}

and

microvm.nix/pkgs/microvm-command.nix

Line 21 in 42628f7

git jq nix

.

Can this be avoided by replace git with gitMinimal? It seems that none of the Perl functionalities is required by git in those two scripts. I can currently work around this problem by applying overlays, but from my perspective, this is not a clean solution compared to only relying on the core subset of Git.