Use runtime.Version()

scripts/build.sh

@@ -22,7 +22,6 @@ revision=$( git rev-parse --short HEAD 2> /dev/null || echo 'unknown' )
 branch=$( git rev-parse --abbrev-ref HEAD 2> /dev/null || echo 'unknown' )
 host=$( hostname )
 build_date=$( TZ=UTC date +%Y%m%d-%H:%M:%S )
-go_version=$( go version | sed -e 's/^[^0-9.]*\([0-9.]*\).*/\1/' )
 
 if [ "$(go env GOOS)" = "windows" ]; then
 	ext=".exe"
@@ -34,7 +33,6 @@ ldflags="
   -X ${repo_path}/version.Branch=${branch}
   -X ${repo_path}/version.BuildUser=${USER}@${host}
   -X ${repo_path}/version.BuildDate=${build_date}
-  -X ${repo_path}/version.GoVersion=${go_version}
   ${EXTRA_LDFLAGS}"
 
 export GO15VENDOREXPERIMENT="1"

version/info.go

@@ -13,7 +13,11 @@
 
 package version
 
-import "github.com/prometheus/client_golang/prometheus"
+import (
+	"runtime"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
 
 // Build information. Populated at build-time.
 var (
@@ -22,7 +26,7 @@ var (
 	Branch    string
 	BuildUser string
 	BuildDate string
-	GoVersion string
+	GoVersion = runtime.Version()
 )
 
 // Map provides the iterable version information.