Threads for dbe

1. 1

   dbe 2 years ago | link | on: Haskell-like list comprehension

   Why is it a class though?

   1. 1

      jfet97 2 years ago | link

      What’s the problem?

1. 3

   bbigras 4 years ago | link | on: NixOS: Release 18.03 (“Impala”, 2018/04/04)

   Any NixOS user can tell me if the only way to have the latest version of everything is to use the unstable channel? Basically I want Arch but with an easy undo button so I don’t look like a fool at work when upgrades go bad.

   1. 8

      mpcsh 4 years ago | link

      I’m an Arch -> NixOS convert and run unstable, it’s basically what you’re looking for.

      1. 2

         bbigras 4 years ago | link

         Thanks you very much.
   2. 3

      ac edited 4 years ago | link

      Even better, you can run stable, but then manually pull unstable packages out and install them. I ran 17.09 but pulled in the unstable LLVM 6.0 for example. The same would work for firefox/chrome or other packages.

      for example:

      let
      unstablePkgs = import ((import <nixpkgs> { }).fetchFromGitHub {
        owner = "NixOS";
        repo = "nixpkgs";
        rev = "Some future unstable nixos version with a version of firefox you want";
        sha256 = "XXX";
      }) { config = { }; }
      in
        unstablePkgs.firefox
      

      If you paste that into a file default.nix and run “nix-build” (or now in this release “nix build”) it will give you exactly the right firefox like magic you can also install it into your user profile with nix-env -i.

      edit: Or what you could do, is run unstable, but pull in old packages from the past if you don’t want the new one.

      1. 2

         dbe 4 years ago | link

         like magic

         that is also my experience in using nix.
      2. 1

         puffnfresh 4 years ago | link

         That’s a super easy way to do it. If you wanna add unstable and have a tool track the commits, you can use nix-channel, add it then install it via nix-env and a prefix.

         1. 1

            ac 4 years ago | link

            Any NixOS user can tell me if the only way to have the latest version of everything is to use the unstable channel? Basically I want Arch but with an easy undo button so I don’t look like a fool at work when upgrades go bad.

            True, I have never tried having multiple channels, but it works too.