dev/{go,rkt}: add extraShellHook with rkt functionality

derivations/dev/go.nix

@@ -2,8 +2,10 @@
 pkgs ? import /home/steveej/src/github/NixOS/nixpkgs {},
 name ? "generic",
 version,
-extraBuildInputs ? [] }: 
-let 
+extraBuildInputs ? [],
+extraShellHook ? ""
+}:
+let
   go = builtins.getAttr "go_${version}" pkgs;
   buildInputs = with pkgs; [
       glibc.out
@@ -21,16 +23,27 @@ let
       #ginkgo ginkgo.bin
       #gomega
   ];
-  goShellHook = { go, name }: ''
-      goname=${go.version}_$name
-      setPS1 $goname
-      export GOROOT=${go}/share/go
-      export GOPATH="$HOME/.gopath_$goname"
-      export PATH="$HOME/.gopath_$goname/bin:$PATH"
-      unset name
-    '';
+
 in pkgs.stdenv.mkDerivation {
   inherit name;
-  shellHook = (goShellHook) { inherit name; inherit go; };
   buildInputs = extraBuildInputs ++ buildInputs;
+  shellHook = ''
+    goname=${go.version}_$name
+    setPS1 $goname
+    export GOROOT=${go}/share/go
+    export GOPATH="$HOME/.gopath_$goname"
+    export PATH="$HOME/.gopath_$goname/bin:$PATH"
+    unset name
+    unset SSL_CERT_FILE
+
+    go get -u github.com/Masterminds/glide
+    go get -u github.com/sgotti/glide-vc
+    go get -u github.com/alecthomas/gometalinter
+    go get -u github.com/golang/lint/golint
+    go get -u github.com/rogpeppe/godef
+    go get -u github.com/kisielk/errcheck
+    go get -u github.com/jstemmer/gotags
+    go get -u github.com/klauspost/asmfmt/cmd/asmfmt
+    ${extraShellHook}
+  '';
 }