A simple watch files utility
You can use it to watch files and run any command.
It is not necessary to be a Golang project.

$ go get -u github.com/rafaelsq/wtc
$ cd my_go_project
$ wtc "go build main.go" "./my_go_project"

You can create an Yaml file with your rules. Default;

no_trace: false
debounce: 300
ignore: "\\.git/"
trig: build
rules:
  - name: build
    match: ".go$"
    ignore: "_test\\.go$"
    command: "go build"
    trig: run
  - name: run
    match: "^$"
    command: "./$(basename `pwd`)"
  - name: test
    match: "_test\\.go$"
    command: "go test -cover {PKG}"

If you run wtc "<build-cmd>" "<run-cmd>", it will replace default commands above.
If you create your own .wtc.yaml or wtc.yaml, no default rules will exists.