fetchpijul is broken: unable to get local issuer certificate

[2xsaiko]

Describe the bug

The pijul fetcher throws a certificate error when used, for example with the following command:

% nix build -I nixpkgs=flake:nixpkgs/master --impure --expr '(import <nixpkgs> {}).fetchpijul {url = "https://nest.pijul.com/pijul/pijul";}

Repository created at /nix/store/5fijkz7p9y1fsqbry4fk40j26pgh77bv-fetchpijul
Error: error sending request for url (https://nest.pijul.com/pijul/pijul/.pijul?channel=main&id=): error trying to connect: error:0A000086:SSL routines:tls_post_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1889: (unable to get local issuer certificate)

Related: #3382

Steps To Reproduce

Steps to reproduce the behavior:

1. Use fetchpijul (for example like in the command above)
2. Fetch fails with above error

Expected behavior

Repository gets fetched successfully

Notify maintainers

@nrabulinski

Metadata

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

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.1.63, NixOS, 23.11 (Tapir), 23.11.20231121.cccc85f`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.1`
 - nixpkgs: `/etc/nix/inputs/nixpkgs`

Priorities

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[nrabulinski]

Oh my, thanks for notifying, I'll make a PR to fix that ASAP!