2 files changed, 10 insertions, 7 deletions

diff --git a/README.md b/README.md
index 359df8b..917dc41 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,10 @@ Ziel dieser Arbeit ist es, aus der Behebung dieser Einschränkung heraus einen G
 ## Build
 
 ```
-nix-shell --command make
+nix-shell
+mkdir -p build/tikzcache
+ln -s build/tikzcache .
+make
 ```
 
 Die Rohdaten der dokumentierten Simulationsergebnisse finden sich in `img/data`.
diff --git a/shell.nix b/shell.nix
index 76a3be4..b99cd78 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,12 +1,12 @@
-with import <nixpkgs> {};
+{ pkgs ? import <nixpkgs> { }, ... }:
 
-stdenv.mkDerivation rec {
+pkgs.stdenv.mkDerivation rec {
   name = "latex-env";
-  env = buildEnv { name = name; paths = buildInputs; };
+  env = pkgs.buildEnv { name = name; paths = buildInputs; };
 
   buildInputs = let
-    texlive-custom = texlive.combine {
-      inherit (texlive) scheme-small collection-langgerman latexmk
+    texlive-custom = pkgs.texlive.combine {
+      inherit (pkgs.texlive) scheme-small collection-langgerman latexmk
       amsmath
       abstract
       cm-super
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
       adjustbox collectbox
       ;
     };
-  in [
+  in with pkgs; [
     gnumake
     texlive-custom biber
     python3Packages.pygments