Move to go module & improve error messages

Makefile

@@ -18,3 +18,13 @@ test.ci:
 	@echo "Running test"
 	@go test -v ./...
 .PHONY: test.ci
+
+build:
+	@echo "Building"
+	@go build
+.PHONY: build
+
+docs:
+	@echo "Building docs"
+	@static-docs --in docs --out build
+.PHONY: docs

cli/start.go

@@ -18,21 +18,20 @@ func init() {
 	test := start.Flag("test", "Test config file").Short('t').Bool()
 
 	start.Action(func(ctx *kingpin.ParseContext) error {
-		fmt.Printf("Start tmux with config file: %v\n", *configPath)
 
 		filePath, err := findup.Find(*configPath)
 		if err != nil {
-			log.Fatalf("Error locating config file %v\n", err)
+			kingpin.FatalUsageContext(ctx, "locating config file: %v", err)
 		}
 
 		file, err := os.Open(filePath)
 		if err != nil {
-			log.Fatalf("Error openning config file %v\n", err)
+			kingpin.FatalUsageContext(ctx, "Error openning config file %v\n", err)
 		}
 
 		conf, err := config.Parse(file)
 		if err != nil {
-			log.Fatalf("Error parsing %s: %v\n", file.Name(), err)
+			kingpin.FatalUsageContext(ctx, "Error parsing %s: %v\n", file.Name(), err)
 		}
 
 		// stop after parsing in case of test
@@ -41,19 +40,21 @@ func init() {
 			os.Exit(0)
 		}
 
+		fmt.Printf("Start tmux with config file: %v\n", *configPath)
+
 		runningSessions, err := tmux.ListSessions()
 		if err != nil {
-			log.Fatalf("Error listing running sessions %v\n", err)
+			kingpin.FatalUsageContext(ctx, "Error listing running sessions %v\n", err)
 		}
 
 		options, err := tmux.GetOptions()
 		if err != nil {
-			log.Fatalf("Error getting tmux options %v\n", err)
+			kingpin.FatalUsageContext(ctx, "Error getting tmux options %v\n", err)
 		}
 
 		sess := builder.NewSession(conf, options)
 		if _, ok := runningSessions[sess.Name]; ok {
-			log.Fatalf("Session %s is already running\n", sess.Name)
+			kingpin.FatalUsageContext(ctx, "Session %s is already running\n", sess.Name)
 		}
 
 		checkError := func(err error) {

go.mod

@@ -0,0 +1,15 @@
+module github.com/alexandrebodin/tmuxctl
+
+go 1.15
+
+require (
+	github.com/BurntSushi/toml v0.3.0
+	github.com/alecthomas/kingpin v2.2.6+incompatible
+	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect
+	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
+	github.com/alexandrebodin/go-findup v0.0.0-20180620214025-59888d10a1b8
+	github.com/davecgh/go-spew v1.1.0 // indirect
+	github.com/pkg/browser v0.0.0-20170505125900-c90ca0c84f15
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/testify v1.2.2
+)

go.sum

@@ -0,0 +1,18 @@
+github.com/BurntSushi/toml v0.3.0 h1:e1/Ivsx3Z0FVTV0NSOv/aVgbUWyQuzj7DDnFblkRvsY=
+github.com/BurntSushi/toml v0.3.0/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/alecthomas/kingpin v2.2.6+incompatible h1:5svnBTFgJjZvGKyYBtMB0+m5wvrbUHiqye8wRJMlnYI=
+github.com/alecthomas/kingpin v2.2.6+incompatible/go.mod h1:59OFYbFVLKQKq+mqrL6Rw5bR0c3ACQaawgXx0QYndlE=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alexandrebodin/go-findup v0.0.0-20180620214025-59888d10a1b8 h1:e71cKH3DakMUxuBKDb1v+rWiCfZW+jPGf7jOSFM8VJI=
+github.com/alexandrebodin/go-findup v0.0.0-20180620214025-59888d10a1b8/go.mod h1:vUL3dISMHKvXeQYHEJcOjDNQTvOTbIhA024o7/umW1Q=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pkg/browser v0.0.0-20170505125900-c90ca0c84f15 h1:mrI+6Ae64Wjt+uahGe5we/sPS1sXjvfT3YjtawAVgps=
+github.com/pkg/browser v0.0.0-20170505125900-c90ca0c84f15/go.mod h1:4OwLy04Bl9Ef3GJJCoec+30X3LQs/0/m4HFRt/2LUSA=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=