emacs-packages: elpy init at 1.9.0

pkgs/top-level/emacs-packages.nix

@@ -440,6 +440,42 @@ let self = _self // overrides;
     };
   };
 
+  elpy = melpaBuild rec {
+    pname   = "elpy";
+    version = "1.9.0";
+    src = fetchFromGitHub {
+      owner  = "jorgenschaefer";
+      repo   = pname;
+      rev    = "39ea47c73f040ce8dcc1c2d2639ebc0eb57ab8c8";
+      sha256 = "0q3av1qv4m6aj4bil608f688hjpr5px8zqnnrdqx784nz98rpjrs";
+    };
+
+    patchPhase = ''
+      for file in elpy.el elpy-pkg.el; do
+        substituteInPlace $file \
+            --replace "company \"0.8.2\"" "company \"${company.version}\"" \
+            --replace "find-file-in-project \"3.3\"" "find-file-in-project \"${find-file-in-project.version}\"" \
+            --replace "highlight-indentation \"0.5.0\"" "highlight-indentation \"${highlight-indentation.version}\"" \
+            --replace "pyvenv \"1.3\"" "pyvenv \"${pyvenv.version}\"" \
+            --replace "yasnippet \"0.8.0\"" "yasnippet \"${yasnippet.version}\""
+     done
+    '';
+
+    packageRequires = [
+      company find-file-in-project highlight-indentation pyvenv yasnippet
+    ];
+
+    meta = {
+      description = "Emacs Python Development Environment";
+      longDescription = ''
+        Elpy is an Emacs package to bring powerful Python editing to Emacs.
+        It combines a number of other packages, both written in Emacs Lisp as
+        well as Python.
+      '';
+      license = gpl3Plus;
+    };
+  };
+
   engine-mode = melpaBuild rec {
     pname = "engine-mode";
     version = "1.0.0";