*nix just means operating systems that are like the old workhorse Unix. Some examples include Linux, FreeBSD, and Mac OS X (its kernel, Darwin, is based on BSD). The main relation between *nix and Ruby is just a pragmatic one; most Ruby developers seem to prefer to work on Unix-like OSes (typically Linux or Mac OS X).

Nov 5, 2023 · Is there a method to retrieve the current NixOS version within a Nixos configuration.nix? I'm in the process of upgrading from NixOS 20.03 to 23.05 and I'd like to maintain a single configuration that is compatible with both versions.

Aug 16, 2022 · I'd like to define/manage a config file within a nix file and have it end up in the nix store, how can I do this? Currently I'm managing this (outside of the nix store) manually by having the file within a path like ~/example/config.json, and used like the below:

Oct 9, 2015 · I'm on NixOS 15 and nix-shell v1.10. I use Zsh as my main shell now, and would like to use it in conjuction with Oh-My-Zsh within the nix-shell as well when I'm working in development environments built by a Nix expression. If it helps, here is one of the Nix environments I have set up for a Rails project:

Dec 17, 2022 · I'd rather avoid head for the same reasons I'd avoid reading from ls or find: file names can contain newlines.. True, you can probably depend on .drv files *not to include new lines, and I suspect there are other places in Nix that assume single-line file names any

I can query available packages w/ nix-env -qa [package] but how can I look for optional packages (e.g. libraries) that depend on a primary package and can be loaded or installed separately? Example: Coq (coq-8.6) has packages coqPackages_8_6.ssreflect and coqPackages_8_6.mathcomp that I can get no information about in Nix AFAIK

Mar 24, 2015 · Nix does support symlinked store somewhat and there is a flag for that - NIX_IGNORE_SYMLINK_STORE. I had used symlinked /nix (with the flag) without any problems until I tried to install an R package which wanted to compile c++ code. At that point ld-wrapper.sh failed to recognize the path in the store after the symlink was replaced with actual ...

Dec 3, 2019 · A great tool to browse around the nixkpgs attribute set is nix repl "<nixpkgs/nixos>", which drops you into a nix interpreter with tab-completion. When using nix-env for imperative software installation, you still have to substite pkgs by nixos in the package's attribute path.

Jan 5, 2022 · Multiple versions of this command were found in Nix. And then when choosing the .out, python starts. I found out I need to add python3 to .nix so that nix can automatically run python39Full if I type python3, in order to skip the message above. Add 'python39Full' to replit.nix if you want to install 'python3' in this repl.

May 9, 2021 · Nix-language features if-else-statements, so now all I need is a way to find out what kind of system I ...