misc.md

Miscellaneous

What I learned while working on this repo

• If a command in a Dockerfile expects a string as a parameter, it should look like ["bash", "-c" "command" ]

• Sometimes, Firefox refuses to connect to a Docker container. In this case, one needs to open a new tab

• VSCodium can't execute a command line nix if there is a dir called nix - src. That's why, I created nix-files directories

• Environment variables aren't supported by CMD in exec mode - src

• One can bring any packages from nixpkgs into shell (provided there already is bashInteractive), e.g. nix shell nixpkgs#poetry

• It's possible to specify a build script for dream2nix's package like this

dream2nix.lib.makeFlakeOutputs {
  systems = [ system ];
  config.projectRoot = ./.;
  source = gitignore.lib.gitignoreSource ./.;
  settings = [
    {
      subsystemInfo.nodejs = 16;
    }
  ];
  packageOverrides = {
    app_purescript = {
      "build" = {
        buildScript = ''
          PATH=${myTools.purs-0_15_4}/bin:$PATH
          ${myTools.spago}/bin/spago bundle-app --to dist/index.js --minify
        '';
      };
    };
  };

• Interactive diagrams of /nix/store - nix-du

• can't un-ignore a file if its parent dir is ignored .gitignore - SO

• Get branch from upstream into fork - src

Stuff I made along the way

• Tutorials and Notes (also on Nix)
• flakes - library-monorepo with nix my flakes
• vscodium-extensions
  • customizable list of extensions - here
  • a larger list of extensions - here

TODO

• Pure Nix builds for:

  • app_purescript - via spago.nix
  • app_python - via poetry2nix

• Additional tasks.

  • Docker: remove dangling images - src
  • Lint files

• desc - use this nix eval

  nix eval nix#checks.x86_64-linux --apply builtins.attrNames
  

Ansible

• If write 2 roles with vars in a step, they will both run. Example - 2 docker containers
• If playbooks are in two separate steps, only 1 of them will run