Tried to install it on a Linux Mint 14 box

go get "github.com/globocom/config"

cd .; bzr branch https://launchpad.net/goyaml /home/jacekf/Dev/go/src/pkg/launchpad.net/goyaml

package github.com/globocom/config
imports github.com/howeyc/fsnotify
imports launchpad.net/goyaml: exec: "bzr": executable file not found in $PATH

a bzr executable on a box is not acceptable prerequisite for a library.

Is it possible to retrieve the value of the environment variable only if set while using a default value if not ?

my_var: ${FOO:-bar}

In the above example, my_var would have the value in FOO if that variable is present or simply not empty, and bar default value if not.

The package should support serialization of the configuration (something like WriteConfigFile, matching ReadConfigFile).

This function will be used to read configuration from a file, and watch changes to that file, updating the configuration whenever the file change.

This will allow to change configuration files without restarting servers that use this package.