minikube: set version of vendored kubernetes libraries

This gives a valid default version when minikube attempts to download
localkube, kubeadm, and other binaries, and makes downloading and vendoring
localkube as binary data unnecessary.

pkgs/applications/networking/cluster/minikube/default.nix

@@ -1,22 +1,8 @@
 { stdenv, buildGoPackage, fetchFromGitHub, fetchurl, go-bindata, libvirt, qemu, docker-machine-kvm,
-  gpgme, makeWrapper, hostPlatform, vmnet }:
+  gpgme, makeWrapper, hostPlatform, vmnet, python }:
 
 let binPath = stdenv.lib.optionals stdenv.isLinux [ libvirt qemu docker-machine-kvm ];
 
-  # Normally, minikube bundles localkube in its own binary via go-bindata. Unfortunately, it needs to make that localkube
-  # a static linux binary, and our Linux nixpkgs go compiler doesn't seem to work when asking for a cgo binary that's static
-  # (presumably because we don't have some static system libraries it wants), and cross-compiling cgo on Darwin is a nightmare.
-  #
-  # Note that minikube can download (and cache) versions of localkube it needs on demand. Unfortunately, minikube's knowledge
-  # of where it can download versions of localkube seems to rely on a json file that doesn't get updated as often as we'd like. So
-  # instead, we download localkube ourselves and shove it into the minikube binary. The versions URL that minikube uses is
-  # currently https://storage.googleapis.com/minikube/k8s_releases.json
-
-  localkube-version = "1.10.0";
-  localkube-binary = fetchurl {
-    url = "https://storage.googleapis.com/minikube/k8sReleases/v${localkube-version}/localkube-linux-amd64";
-    sha256 = "02lkl2g274689h07pkcwnxn04swy6aa3f2z77n421mx38bbq2kpd";
-  };
 in buildGoPackage rec {
   pname   = "minikube";
   name    = "${pname}-${version}";
@@ -31,28 +17,24 @@ in buildGoPackage rec {
     sha256 = "00gj8x5p0vxwy0y0g5nnddmq049h7zxvhb73lb4gii5mghr9mkws";
   };
 
-  patches = [
-    ./localkube.patch
-  ];
-
   buildInputs = [ go-bindata makeWrapper gpgme ] ++ stdenv.lib.optional hostPlatform.isDarwin vmnet;
   subPackages = [ "cmd/minikube" ];
 
   preBuild = ''
     pushd go/src/${goPackagePath} >/dev/null
 
-    mkdir -p out
+    go-bindata -nomemcopy -o pkg/minikube/assets/assets.go -pkg assets deploy/addons/...
-    cp ${localkube-binary} out/localkube
-
-    go-bindata -nomemcopy -o pkg/minikube/assets/assets.go -pkg assets ./out/localkube deploy/addons/...
 
     ISO_VERSION=$(grep "^ISO_VERSION" Makefile | sed "s/^.*\s//")
     ISO_BUCKET=$(grep "^ISO_BUCKET" Makefile | sed "s/^.*\s//")
+    KUBERNETES_VERSION=$(${python}/bin/python hack/get_k8s_version.py --k8s-version-only 2>&1) || true
 
     export buildFlagsArray="-ldflags=\
       -X k8s.io/minikube/pkg/version.version=v${version} \
       -X k8s.io/minikube/pkg/version.isoVersion=$ISO_VERSION \
-      -X k8s.io/minikube/pkg/version.isoPath=$ISO_BUCKET"
+      -X k8s.io/minikube/pkg/version.isoPath=$ISO_BUCKET \
+      -X k8s.io/minikube/vendor/k8s.io/client-go/pkg/version.gitVersion=$KUBERNETES_VERSION \
+      -X k8s.io/minikube/vendor/k8s.io/kubernetes/pkg/version.gitVersion=$KUBERNETES_VERSION"
 
     popd >/dev/null
   '';

pkgs/applications/networking/cluster/minikube/localkube.patch

@@ -1,20 +0,0 @@
-diff --git a/pkg/minikube/bootstrapper/localkube/localkube.go b/pkg/minikube/bootstrapper/localkube/localkube.go
-index 1c4b5000..c9f120d4 100644
---- a/pkg/minikube/bootstrapper/localkube/localkube.go
-+++ b/pkg/minikube/bootstrapper/localkube/localkube.go
-@@ -113,14 +113,9 @@ func (lk *LocalkubeBootstrapper) UpdateCluster(config bootstrapper.KubernetesCon
-
- 	copyableFiles := []assets.CopyableFile{}
- 	var localkubeFile assets.CopyableFile
--	var err error
-
- 	//add url/file/bundled localkube to file list
--	lCacher := localkubeCacher{config}
--	localkubeFile, err = lCacher.fetchLocalkubeFromURI()
--	if err != nil {
--		return errors.Wrap(err, "Error updating localkube from uri")
--	}
-+	localkubeFile = assets.NewBinDataAsset("out/localkube", "/usr/local/bin/", "localkube", "0777")
- 	copyableFiles = append(copyableFiles, localkubeFile)
-
- 	// user added files