[nix,bs] working&simple

Makefile

 all: slides.pdf
 
 slides.pdf: slides.tex
-	rubber --pdf slides
+	pdflatex slides.tex
+	pdflatex slides.tex
 
 clean:
-	rubber --pdf --clean slides
 	rm -f slides.vrb

default.nix

-{ pkgs ? import <nixpkgs> {} }:
+{ pkgs ? import
+  ( fetchTarball "https://github.com/NixOS/nixpkgs/archive/19.03.tar.gz") {}
+}:
+
 with pkgs;
 let
-  texlive = pkgs.texlive.combined.scheme-minimal;
+  texlive = pkgs.texlive.combined.scheme-full;
 in
   stdenv.mkDerivation rec {
     name = "slides";
-    src = ./.;
-    buildInputs = [ texlive pkgs.dia rubber ninja ];
+    src = pkgs.lib.sourceByRegex ./. [
+      "^slides.tex"
+      "^Makefile"
+      "^figures"
+      "^figures/.*\.jpg"
+      "^figures/.*\.pdf"
+      "^figures/.*\.png"
+    ];
+    buildInputs = [ texlive gnumake ];
     buildPhase = "make";
 
     installPhase = ''