@DanConwayDev developed ngit, so git over nostr. You can check it out at https://gitworkshop.dev/ As for CI/CD, that's something i'm working on right now, early stages but i'm going to utilize DVM's to achieve the things you mentioned!
Looking forward to trying it out 😀
nostr:nprofile1qqsfuncrv0czqknam92svndtgwrwuh7u2znwhgn73ze0lspyar44kkspr9mhxue69uhhyetvv9ujumt0d4hhxarj9ecxjmnt9utxes9t perhaps a nostr integration could be useful for nix as well?