module: bump minimum Go version to 1.18 and use debug.ReadBuildInfo()

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.7.0 to 1.7.1 (#72).
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](https://github.com/stretchr/testify/compare/v1.7.0...v1.7.1)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         go:
-        - '1.16'
+        - '1.18'
     env:
       GO111MODULE: on
       GOPROXY: direct

Makefile

@@ -53,8 +53,8 @@ remote-run: clean ## Run clean, build $RUN_COMMAND for Linux on ARM and launch i
 release: ## Build and upload release version of miflorad to Github
 	mkdir -p pkg
 	pushd cmd/miflorad
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o "../../pkg/miflorad-$(MIFLORAD_VERSION)-linux-amd64" -ldflags="-s -w -X main.version=$(MIFLORAD_VERSION)"
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -o "../../pkg/miflorad-$(MIFLORAD_VERSION)-linux-arm" -ldflags="-s -w -X main.version=$(MIFLORAD_VERSION)"
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o "../../pkg/miflorad-$(MIFLORAD_VERSION)-linux-amd64" -ldflags="-s -w"
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -o "../../pkg/miflorad-$(MIFLORAD_VERSION)-linux-arm" -ldflags="-s -w"
 	popd
 #	github-release "v$(MIFLORAD_VERSION)" pkg/miflorad-$(MIFLORAD_VERSION)-* --commit "master" --tag "v$(MIFLORAD_VERSION)" --prerelease --github-repository "cmur2/miflorad"
 	github-release "v$(MIFLORAD_VERSION)" pkg/miflorad-$(MIFLORAD_VERSION)-* --commit "master" --tag "v$(MIFLORAD_VERSION)" --github-repository "cmur2/miflorad"
@@ -62,7 +62,7 @@ release: ## Build and upload release version of miflorad to Github
 .PHONY: cmd/miflorad/miflorad
 cmd/miflorad/miflorad:
 	pushd cmd/miflorad
-	CGO_ENABLED=0 go build -buildmode=pie -ldflags "-X main.version=$(MIFLORAD_VERSION)"
+	CGO_ENABLED=0 go build -buildmode=pie
 
 .PHONY: cmd/munin-miflora/munin-miflora
 cmd/munin-miflora/munin-miflora:

cmd/miflorad/version.go

@@ -1,12 +1,21 @@
 package main
 
-// program version, will be populated on build
-var version string
+import (
+	"runtime/debug"
+)
 
 func getVersion() string {
-	if version == "" {
-		return "dev"
-	} else {
-		return version
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return "unknown"
 	}
+
+	for _, kv := range info.Settings {
+		switch kv.Key {
+		case "vcs.revision":
+			return kv.Value[0:8]
+		}
+	}
+
+	return "unknown"
 }

go.mod

@@ -1,12 +1,25 @@
 module miflorad
 
-go 1.16
+go 1.18
 
 require (
 	github.com/currantlabs/gatt v0.0.0-20161006170101-f949eac78f4e
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/eclipse/paho.mqtt.golang v1.3.3
+	github.com/eclipse/paho.mqtt.golang v1.3.5
 	github.com/go-ble/ble v0.0.0-20200120171844-0a73a9da88eb
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.7.0
+	github.com/stretchr/testify v1.7.1
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/mattn/go-colorable v0.1.4 // indirect
+	github.com/mattn/go-isatty v0.0.10 // indirect
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/mgutz/logxi v0.0.0-20161027140823-aebf8a7d67ab // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/raff/goble v0.0.0-20190909174656-72afc67d6a99 // indirect
+	golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 // indirect
+	golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )

go.sum

@@ -5,8 +5,8 @@ github.com/currantlabs/gatt v0.0.0-20161006170101-f949eac78f4e/go.mod h1:GCdlaU9
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eclipse/paho.mqtt.golang v1.3.3 h1:Fh1zsLniMFJByLqKrSB9ZRjkbpU0k1Xne23ZqEE/O08=
-github.com/eclipse/paho.mqtt.golang v1.3.3/go.mod h1:eTzb4gxwwyWpqBUHGQZ4ABAV7+Jgm1PklsYT/eo8Hcc=
+github.com/eclipse/paho.mqtt.golang v1.3.5 h1:sWtmgNxYM9P2sP+xEItMozsR3w0cqZFlqnNN1bdl41Y=
+github.com/eclipse/paho.mqtt.golang v1.3.5/go.mod h1:eTzb4gxwwyWpqBUHGQZ4ABAV7+Jgm1PklsYT/eo8Hcc=
 github.com/go-ble/ble v0.0.0-20200120171844-0a73a9da88eb h1:YLbB9CgjUw1U9GxEqGvM2ld9YqHRoBeEEM7f8A8l9x0=
 github.com/go-ble/ble v0.0.0-20200120171844-0a73a9da88eb/go.mod h1:nwmyxHsP2cqjashMTTAl3A5t6V3vzev1rLgMb/pZ7jc=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
@@ -31,8 +31,8 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 h1:Jcxah/M+oLZ/R4/z5RzfPzGbPXnVDPkEDtf2JnuxN+U=