diff --git a/makefile b/makefile
index c17acce..80898d4 100644
--- a/makefile
+++ b/makefile
@@ -6,32 +6,40 @@ CCOMPILE = \
 	mkdir -p $(@D); \
 	$(CC) $(CFLAGS) $^ -o $@
 
+ex-1: ex-1/bin/main ex-1/bin/pdf
 ex-1/bin/main: ex-1/main.c ex-1/landau.c ex-1/tests.c ex-1/bootstrap.c
 	$(CCOMPILE)
 ex-1/bin/pdf: ex-1/pdf.c
 	$(CCOMPILE)
 
+ex-2: ex-2/bin/fancy ex-2/bin/fancier ex-2/bin/limit ex-2/bin/naive ex-2/bin/recip
 ex-2/bin/%: ex-2/%.c
 	$(CCOMPILE)
 
+ex-3: ex-3/bin/main
 ex-3/bin/main: ex-3/main.c ex-3/common.c ex-3/likelihood.c ex-3/chisquared.c
 	$(CCOMPILE)
 
+ex-4: ex-4/bin/main
 ex-4/bin/main: ex-4/main.c
 	$(CCOMPILE)
 
+ex-5: ex-5/bin/casino ex-5/bin/manual ex-5/bin/trifecta
 ex-5/bin/%: ex-5/%.c
 	$(CCOMPILE)
 
+ex-6: ex-6/bin/main
 ex-6/bin/main: ex-6/main.c ex-6/rl.c ex-6/fft.c
 	$(CCOMPILE)
 
+ex-7: ex-7/bin/main ex-7/bin/test
 ex-7/bin/main: ex-7/main.c ex-7/common.c ex-7/fisher.c ex-7/percep.c
 	$(CCOMPILE)
 ex-7/bin/test: ex-7/test.c ex-7/common.c
 	$(CCOMPILE)
 
-misc/pdfs: misc/pdfs.c
+misc: misc/bin/pdfs
+misc/bin/pdfs: misc/pdfs.c
 
 clean:
 	rm -rf ex-*/bin
diff --git a/shell.nix b/shell.nix
index c3feca5..8bb53d8 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,10 +1,20 @@
 with import <nixpkgs> { };
 
 stdenv.mkDerivation {
-  name = "jeypsi";
+  name = "analistica";
 
   GMP_PATH = "${gmp}/lib";
 
-  buildInputs = with pkgs; [ gdb gsl gmp pkgconfig ];
+  buildInputs = with pkgs; [
+    # C dependencies
+    gsl gmp pkgconfig
+
+    # Python
+    (python3.withPackages (p: [ p.numpy p.matplotlib ]))
+
+    # misc
+    gdb fish
+  ];
+
   shellHook = "exec fish";
 }