nix – Tarik Billa

What is the meaning of sha256 in nixpkgs.fetchgit? Where does the value come from?

September 3, 2023 by Tarik

As I was advised on IRC: >nix-prefetch-git https://github.com/ghcjs/ghcjs-dom Initialized empty Git repository in /tmp/user/1000/git-checkout-tmp-uxoKqy9s/git-export/.git/ remote: Counting objects: 1070, done. remote: Compressing objects: 100% (236/236), done. remote: Total 1070 (delta 858), reused 932 (delta 829), pack-reused 0 Receiving objects: 100% (1070/1070), 580.67 KiB | 911.00 KiB/s, done. Resolving deltas: 100% (858/858), done. From https://github.com/ghcjs/ghcjs-dom * branch … Read more

How to get cabal and nix work together

September 1, 2023 by Tarik

I do all my development using Nix and cabal these days, and I can happily say that they work in harmony very well. My current workflow is very new, in that it relies on features in nixpkgs that have only just reached the master branch. As such, the first thing you’ll need to do is … Read more

When and how should default.nix, shell.nix and release.nix be used?

February 10, 2023 by Tarik

First of all, default.nix and shell.nix have special meanings in Nix tool, but release.nix is a convenience one. Next, default.nix is used as a default file when running nix-build, and shell.nix is used as a default file when running nix-shell. Just like you said. Next, default.nix isn’t used only for nix-build. For example, <nixpkgs/lib/default.nix> is … Read more

Unable to negotiate with 40.74.28.9 port 22: no matching host key type found. Their offer: ssh-rsa

November 28, 2022 by Tarik

With SSH, there are several different types of keys and RSA keys (the ssh-rsa) kind can support multiple kinds of signatures. The signature type ssh-rsa refers to RSA with SHA-1, whereas the signature type rsa-sha2-256 is RSA with SHA-256 and rsa-sha2-512 is RSA with SHA-512. In the case of Azure DevOps, it only supports the … Read more