garlic: add shell with the garlic tools

garlic/shell.nix

@@ -0,0 +1,28 @@
+{ pkgs ? import ./. }:
+
+with pkgs;
+with bsc;
+
+mkShell {
+  name = "garlic-shell";
+
+  buildInputs =
+    # Packages from garlic
+    (with garlic; [ tool garlicd ]) ++
+    # Packages from bsc
+    [ groff paraver icc nix openssh git ];
+
+  # inputsFrom to get build dependencies
+
+  shellHook = ''
+    alias l="ls -l --color=auto -v"
+    alias ll="ls -l --color=auto -v"
+    alias lh="ls -hAl --color=auto -v"
+    alias ls="ls --color=auto -v"
+    alias ..="cd .."
+
+    export LANG=C
+
+    echo Welcome to the garlic shell
+  '';
+}