Apply overrides to successfully build pretalx

default.nix

@@ -1,5 +1,6 @@
 {
   pkgs ? import <nixpkgs> { },
+  lib ? pkgs.lib,
   python ? pkgs.python3,
 }:
 
@@ -47,7 +48,9 @@ let
 
           propagatedBuildInputs = let
             depAttrs = getAttrDefault "dependencies" pkgMeta {};
-            dependencies = builtins.attrNames depAttrs;
+            # Some dependencies like django gets the attribute name django
+            # but dependencies try to access Django
+            dependencies = builtins.map (d: lib.toLower d) (builtins.attrNames depAttrs);
           in builtins.map (dep: self."${dep}") dependencies;
 
           src = let

overrides.nix

@@ -1,4 +1,7 @@
-{ pkgs ? import <nixpkgs> { }}:
+{
+  pkgs ? import <nixpkgs> { },
+  lib ? pkgs.lib,
+}:
 
 let
 
@@ -16,12 +19,58 @@ let
     };
   });
 
+  renameCapital = let
+    capitalise = s: let
+      len = builtins.stringLength s;
+      first = lib.toUpper (builtins.substring 0 1 s);
+    in first + builtins.substring 1 len s;
+  in self: super: drv: drv.overrideAttrs(old: {
+    src = self.fetchPypi {
+      pname = capitalise old.pname;
+      version = old.version;
+      sha256 = old.src.outputHash;
+    };
+  });
+
   # Chain multiple overrides into a single one
   composeOverrides = overrides:
     (self: super: drv: builtins.foldl' (drv: override: override self super drv) drv overrides);
 
 in {
 
+  django-bakery = self: super: drv: drv.overrideAttrs(old: {
+    configurePhase = ''
+      if ! test -e LICENSE; then
+        touch LICENSE
+      fi
+    '' + old.configurePhase;
+  });
+
+  pretalx = self: super: drv: drv.overrideAttrs(old: {
+    nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.gettext ];
+  });
+
+  django = self: super: drv: drv.overrideAttrs(old: {
+    nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.gettext ];
+  });
+
+  django-compressor = renameUnderscore;
+
+  django-csp = renameUnderscore;
+
+  django-context-decorator = renameUnderscore;
+
+  markdown = renameCapital;
+
+  pillow = let
+    pillowOverride = self: super: drv: drv.overrideAttrs(old: {
+      nativeBuildInputs = [ pkgs.pkgconfig ]
+        ++ old.nativeBuildInputs;
+      buildInputs = with pkgs; [ freetype libjpeg zlib libtiff libwebp tcl lcms2 ]
+        ++ old.buildInputs;
+    });
+  in composeOverrides [ renameCapital pillowOverride ];
+
   pytest = addSetupTools;
 
   six = addSetupTools;
@@ -43,8 +92,11 @@ in {
   numpy = self: super: drv: drv.overrideAttrs(old: {
     nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.gfortran ];
     buildInputs = old.buildInputs ++ [ pkgs.openblasCompat ];
+  });
 
-    # inherit (super.numpy) preConfigure preBuild enableParallelBuilding;
+  lxml = self: super: drv: drv.overrideAttrs(old: {
+    nativeBuildInputs = with pkgs; old.nativeBuildInputs ++ [ pkgconfig libxml2.dev libxslt.dev ];
+    buildInputs = with pkgs; old.buildInputs ++ [ libxml2 libxslt ];
   });
 
   shapely = self: super: drv: drv.overrideAttrs(old: {