1 files changed, 18 insertions, 1 deletions

diff --git a/ws2015/ffp/presentation/shell.nix b/ws2015/ffp/presentation/shell.nix
index 283ab0e..2f98400 100644
--- a/ws2015/ffp/presentation/shell.nix
+++ b/ws2015/ffp/presentation/shell.nix
@@ -25,10 +25,27 @@ let
       install -m 555 $src $out/bin/shell
     '';
   };
+  present = pkgs.stdenv.mkDerivation {
+    name = "present";
+    src = builtins.toFile "present.sh" ''
+      #!/usr/bin/env zsh
+
+      typeset -a args
+      args=($@)
+      [[ $#@ -eq 0 ]] && args=("presentation.pdf")
+
+      exec pdfpc -g -n right -d 20 $args
+    '';
+    phases = ["installPhase"];
+    installPhase = ''
+      mkdir -p $out/bin
+      install -m 555 $src $out/bin/present
+    '';
+  };
 in
 pkgs.stdenv.mkDerivation rec {
   name = "presentation-env";
-  buildInputs = [ shell ghc ] ++ (with pkgs; [ pdfpc screen-message ]);
+  buildInputs = [ shell present ghc ] ++ (with pkgs; [ screen-message pdfpc ]);
   shellHook = ''
     eval $(egrep ^export ${ghc}/bin/ghc)
     export PROMPT_INFO="${name}"