From 53b2cebb66083ba837fafc931a5699e61ac2149b Mon Sep 17 00:00:00 2001
From: Andrey Nering <andrey@nering.com.br>
Date: Fri, 23 Apr 2021 17:33:13 -0300
Subject: [PATCH] Updated the version output to use Go module build information
 if avalable. Enabled GoReleaser module proxying for verifiable builds.

Co-authored-by: Jamie Edge <JamieEdge@users.noreply.github.com>
Co-authored-by: Carlos Alexandro Becker <caarlos0@gmail.com>
---
 .goreleaser.yml  |  7 ++++++-
 CHANGELOG.md     |  5 +++++
 cmd/task/task.go | 23 +++++++++++++++++++++--
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/.goreleaser.yml b/.goreleaser.yml
index e67d7b9f..fa776cef 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -1,6 +1,6 @@
 build:
   binary: task
-  main: cmd/task/task.go
+  main: cmd/task
   goos:
     - windows
     - darwin
@@ -17,6 +17,11 @@ build:
       goarch: 386
   env:
     - CGO_ENABLED=0
+  ldflags:
+    - -s -w # Don't set main.version.
+
+gomod:
+  proxy: true
 
 archives:
   - name_template: "{{.Binary}}_{{.Os}}_{{.Arch}}"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 335c24d7..c1e66788 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Unreleased
+
+- Improve version reporting when building Task from source using Go Modules
+  ([#462](https://github.com/go-task/task/pull/462), [#473](https://github.com/go-task/task/pull/473)).
+
 ## v3.4.1 - 2021-04-17
 
 - Improve error reporting when parsing YAML: in some situations where you
diff --git a/cmd/task/task.go b/cmd/task/task.go
index 11d7ffab..e7071e1f 100644
--- a/cmd/task/task.go
+++ b/cmd/task/task.go
@@ -7,6 +7,7 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
+	"runtime/debug"
 	"strings"
 	"syscall"
 
@@ -19,7 +20,7 @@ import (
 )
 
 var (
-	version = "master"
+	version = ""
 )
 
 const usage = `Usage: task [-ilfwvsd] [--init] [--list] [--force] [--watch] [--verbose] [--silent] [--dir] [--taskfile] [--dry] [--summary] [task...]
@@ -93,7 +94,7 @@ func main() {
 	pflag.Parse()
 
 	if versionFlag {
-		fmt.Printf("Task version: %s\n", version)
+		fmt.Printf("Task version: %s\n", getVersion())
 		return
 	}
 
@@ -217,3 +218,21 @@ func getSignalContext() context.Context {
 	}()
 	return ctx
 }
+
+func getVersion() string {
+	if version != "" {
+		return version
+	}
+
+	info, ok := debug.ReadBuildInfo()
+	if !ok || info.Main.Version == "" {
+		return "unknown"
+	}
+
+	version = info.Main.Version
+	if info.Main.Sum != "" {
+		version += fmt.Sprintf(" (%s)", info.Main.Sum)
+	}
+
+	return version
+}