Dev environment setup

programs/direnv/README.md

@@ -0,0 +1,9 @@
+# Setting up a new dev environment
+
+* Create a new `*.nix` file in the shells directory that describes the environment (this is the hard part).
+
+* Execute `lorri init` in the base directory of your project. This will create a `.envrc` file and `shell.nix` file.
+
+* Edit the `shell.nix` file to just `import /home/charlotte/.local/share/nix-shells/your-new-file.nix`
+
+* Execute `direnv allow` to load the `.envrc` file which in turn uses `lorri` to load your `shell.nix` file.

programs/direnv/default.nix

@@ -12,5 +12,6 @@
       };
     };
     services.lorri.enable = true;
+    xdg.dataFile.nix-shells.source = ./shells;
   };
 }

programs/direnv/shells/dodona.nix

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+let
+  pkgs = import <nixpkgs> {};
+in
+  pkgs.mkShell {
+    buildInputs = with pkgs; [
+      ruby
+      yarn
+      nodejs-12_x
+      libmysqlclient
+      zlib
+      (pkgs.writeScriptBin "start-db" ''
+        #!${pkgs.zsh}/bin/zsh
+
+        _sighandler() {
+          docker stop dodona-db
+        }
+
+        trap _sighandler SIGINT
+        trap _sighandler SIGTERM
+        trap _sighandler SIGHUP
+
+        docker run --name dodona-db -p 3306:3306 --rm -v $(git rev-parse --show-toplevel)/tmp/db:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=dodona mariadb:latest &
+
+        child=$!
+        wait $child
+        # We wait two times, because the first wait exits when the process receives a signal. The process might have finished though, so we ignore errors.
+        wait $child 2>/dev/null
+      '')
+    ];
+    shellHook = ''
+      export DATABASE_URL="mysql2://root:dodona@127.0.0.1:3306/dodona"
+    '';
+  }

programs/direnv/shells/ledger.nix

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+let
+  pkgs = import <nixpkgs> {};
+  baseVimConfig = import ./vim-base.nix { inherit pkgs; };
+in
+  pkgs.mkShell {
+    buildInputs = with pkgs; [
+      (neovim.override {
+        configure = {
+          customRC = baseVimConfig.customRC;
+          vam.pluginDictionaries = (baseVimConfig.vam.pluginDictionaries or []) ++ [ { name = "vim-ledger"; } ];
+        };
+      })
+    ];
+  }

programs/direnv/shells/nix.nix

@@ -0,0 +1,13 @@
+let
+  pkgs = import <nixpkgs> {};
+in
+  pkgs.mkShell {
+    buildInputs = with pkgs; [
+      (neovim.override {
+        configure = {
+          customRC = baseVimConfig.customRC;
+          vam.pluginDictionaries = (baseVimConfig.vam.pluginDictionaries or []);
+        };
+      })
+    ];
+  }

programs/direnv/shells/vim-base.nix

@@ -0,0 +1,116 @@
+{ pkgs, ... }:
+
+{
+  customRC = ''
+    set autoread
+    "" Theming
+
+    set background=light
+
+    "" General settings
+
+    " Undo over sessions
+    set undofile
+    set undodir=~/.cache/nvimundo
+
+    " Automatically save sessions on exit and load them on start
+    function! MakeSession()
+    let b:sessiondir = $HOME . "/.config/nvim/sessions" . getcwd()
+    if (filewritable(b:sessiondir) != 2)
+    exe 'silent !mkdir -p ' b:sessiondir
+    redraw!
+    endif
+    let b:filename = b:sessiondir . '/session.vim'
+    exe "mksession! " . b:filename
+    endfunction
+
+    function! LoadSession()
+    let b:sessiondir = $HOME . "/.config/nvim/sessions" . getcwd()
+    let b:sessionfile = b:sessiondir . "/session.vim"
+    if (filereadable(b:sessionfile))
+    exe 'source ' b:sessionfile
+    else
+    echo "No session loaded."
+    endif
+    endfunction
+    if(argc() == 0)
+    au VimEnter * nested :call LoadSession()
+    endif
+    au VimLeave * :call MakeSession()
+
+    "" Filetype configuration
+
+    " Base settings for all files
+
+    syntax enable
+    set number
+    set showcmd
+    set scrolloff=8
+    set expandtab
+    set tabstop=4
+    set shiftwidth=4
+    set linebreak
+
+    set list
+    set listchars=tab:·\ ,trail:·
+    set inccommand=split
+    set clipboard=unnamedplus
+
+    filetype plugin indent on
+
+    "" Plugin configuration
+
+    function! s:completedFiles(winid, filename, ...) abort
+    bdelete!
+    call win_gotoid(a:winid)
+    if filereadable(a:filename)
+    let lines = readfile(a:filename)
+    if !empty(lines)
+        exe ':e ' . lines[0]
+    endif
+    call delete(a:filename)
+    endif
+    endfunction
+
+    function! FzyFiles()
+    let file = tempname()
+    let winid = win_getid()
+    let cmd = split(&shell) + split(&shellcmdflag) + ["${pkgs.ripgrep.out}/bin/rg --files --hidden -g '!/.git' --smart-case | ${pkgs.fzy.out}/bin/fzy > " . file]
+    let F = function('s:completedFiles', [winid, file])
+    botright 10 new
+    call termopen(cmd, {'on_exit': F})
+    startinsert
+    endfunction
+
+    function! s:completedGrep(winid, filename, ...) abort
+    bdelete!
+    call win_gotoid(a:winid)
+    if filereadable(a:filename)
+    let lines = readfile(a:filename)
+    if !empty(lines)
+        let list = split(lines[0], ':')
+        let file = list[0]
+        let line = list[1]
+        exe ':e ' . file
+        exe line
+    endif
+    call delete(a:filename)
+    endif
+    endfunction
+
+    function! FzyGrep()
+    let file = tempname()
+    let winid = win_getid()
+    let cmd = split(&shell) + split(&shellcmdflag) + ["${pkgs.ripgrep.out}/bin/rg --vimgrep --hidden -g '!/.git' '^' | ${pkgs.fzy.out}/bin/fzy > " . file]
+    let F = function('s:completedGrep', [winid, file])
+    botright 10 new
+    call termopen(cmd, {'on_exit': F})
+    startinsert
+    endfunction
+
+    nnoremap <C-f> :call FzyFiles()<CR>
+    nnoremap <C-g> :call FzyGrep()<CR>
+  '';
+  vam.knownPlugins = pkgs.vimPlugins;
+  vam.pluginDictionaries = [ { name = "vim-nix"; } ];
+}