use new build version feature

Author: jakecoffman

README.md

@@ -18,11 +18,7 @@ Use any of the following for a pain-free installation:
    ```
    The benefit of this method is that re-running the command will always update to the latest version.
 * You can download a pre-built binary from the [releases] page.
-* If you have the [`gh`][gh] command available, you can install the latest release
-   of `dependabot` using the following command ([gist source](https://gist.github.com/mattt/e09e1ecd76d5573e0517a7622009f06f)):
-   ```shell
-   gh gist view --raw e09e1ecd76d5573e0517a7622009f06f | bash
-   ```
+* On Mac, you can run `brew install dependabot`
 
 ## Requirements
 

cmd/dependabot/internal/cmd/version.go

@@ -1,42 +1,24 @@
 package cmd
 
 import (
-	"fmt"
-	"regexp"
+	"log"
 	"runtime/debug"
 )
 
 // ldflags inserts the version here on release
 var version string
 
-var timestampRegex = regexp.MustCompile("[^a-zA-Z0-9]+")
-
 func Version() string {
 	if version == "" {
 		version = "0.0.0-dev"
-		commit := ""
-		timestamp := ""
-		modified := false
-
-		info, _ := debug.ReadBuildInfo()
-		for _, entry := range info.Settings {
-			if entry.Key == "vcs.revision" && len(entry.Value) >= 7 {
-				commit = entry.Value[:7] // short ref
-			}
 
-			if entry.Key == "vcs.modified" {
-				modified = entry.Value == "true"
-			}
-
-			if entry.Key == "vcs.time" {
-				timestamp = timestampRegex.ReplaceAllString(entry.Value, "")
-			}
+		info, ok := debug.ReadBuildInfo()
+		if !ok {
+			log.Println("debug.ReadBuildInfo failed")
+			return version
 		}
-
-		if modified && timestamp != "" {
-			return fmt.Sprintf("%s+%s", version, timestamp)
-		} else if commit != "" {
-			return fmt.Sprintf("%s+%s", version, commit)
+		if info.Main.Version != "" {
+			version = info.Main.Version
 		}
 	}