build/version: move version.go to build pkg

build/version.go

@@ -3,7 +3,7 @@
 // Heavily inspired by https://github.com/btcsuite/btcd/blob/master/version.go
 // Copyright (C) 2015-2017 The Lightning Network Developers
 
-package main
+package build
 
 import (
 	"bytes"
@@ -11,6 +11,10 @@ import (
 	"strings"
 )
 
+// Commit stores the current commit hash of this build, this should be set using
+// the -ldflags during compilation.
+var Commit string
+
 // semanticAlphabet
 const semanticAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
 
@@ -26,14 +30,9 @@ const (
 	appPreRelease = "beta"
 )
 
-// appBuild is defined as a variable so it can be overridden during the build
-// process with '-ldflags "-X main.appBuild foo' if needed.  It MUST only
-// contain characters from semanticAlphabet per the semantic versioning spec.
-var appBuild string
-
-// version returns the application version as a properly formed string per the
+// Version returns the application version as a properly formed string per the
 // semantic versioning 2.0.0 spec (http://semver.org/).
-func version() string {
+func Version() string {
 	// Start with the major, minor, and patch versions.
 	version := fmt.Sprintf("%d.%d.%d", appMajor, appMinor, appPatch)
 
@@ -46,15 +45,6 @@ func version() string {
 		version = fmt.Sprintf("%s-%s", version, preRelease)
 	}
 
-	// Append build metadata if there is any.  The plus called for
-	// by the semantic versioning spec is automatically appended and should
-	// not be contained in the build metadata string.  The build metadata
-	// string is not appended if it contains invalid characters.
-	build := normalizeVerString(appBuild)
-	if build != "" {
-		version = fmt.Sprintf("%s+%s", version, build)
-	}
-
 	// Append commit hash of current build to version.
 	version = fmt.Sprintf("%s commit=%s", version, Commit)