tidier nix thingies

home-manager/shell.nix

@@ -12,7 +12,7 @@
       cd = "z";
     };
     envExtra = ''
-      PROMPT=$'%B%n%b@%B%m%b: %~ %F{red}''${vcs_info_msg_0_}%f\nλ '
+      PROMPT=$'%B%n%b@%B%m%b: %~\nλ '
       KEYTIMEOUT=1
       MODE_INDICATOR_VICMD='%K{10}%F{8}%B NORMAL %k%f%b'
       MODE_INDICATOR_REPLACE='%K{9}%F{8}%B REPLACE %k%f%b'
@@ -39,36 +39,23 @@
       setopt nomenucomplete
       setopt TRANSIENT_RPROMPT
 
-      run() {
-        pkg="$1"
-        [ "$pkg" = "''${pkg##*#}" ] && pkg="nixpkgs#$pkg"
-        export NIXPKGS_ALLOW_UNFREE=1 NIXPKGS_ALLOW_BROKEN=1
+      nix-subcommand() {
+        cmd="$1"
         shift
-        nix run --impure "$pkg" -- "$@"
-      }
-
-      shell() {
-        i="$#"
-        while [ "$i" -gt 0 ]; do
-          pkg="$1"
-          [ "$pkg" = "''${pkg##*#}" ] && pkg="nixpkgs#$pkg"
+        pkgs=()
+        for pkg in "$@"; do
           shift
-          set -- "$@" "$pkg"
-          : $(( i -= 1 ))
+          [ "$pkg" = -- ] && break
+          [ "$pkg" = "''${pkg##*#}" ] && pkg="nixpkgs#$pkg"
+          pkgs+="$pkg"
         done
         export NIXPKGS_ALLOW_UNFREE=1 NIXPKGS_ALLOW_BROKEN=1
-        nix shell --impure "$@"
+        nix "$cmd" --impure "''${pkgs[@]}" -- "$@"
       }
 
-      autoload -Uz add-zsh-hook vcs_info
-      setopt prompt_subst
-      add-zsh-hook precmd vcs_info
-
-      zstyle ':vcs_info:*' check-for-changes true
-      zstyle ':vcs_info:*' unstagedstr '*'
-      zstyle ':vcs_info:*' stagedstr '+'
-      zstyle ':vcs_info:git:*' formats       '(%b%u%c)'
-      zstyle ':vcs_info:git:*' actionformats '(%b|%a%u%c)'
+      shell() { nix-subcommand "shell" "$@" }
+      run()   { nix-subcommand "run" "$@"   }
+      build() { nix-subcommand "build" "$@" }
     '';
     plugins = [
     {