Snappy is part of Ubuntu Core and enables a fully transactional Ubuntu system.
When working with the source of Go programs, you should define a path within
your home directory (or other workspace) which will be your GOPATH. GOPATH
is similar to Java's CLASSPATH or Python's ~/.local. GOPATH is documented
http://golang.org/pkg/go/build/ and inside the go tool itself
go help gopath
Various conventions exist for naming the location of your GOPATH, but it
should exist, and be writable by you. For example
export GOPATH=${HOME}/work mkdir $GOPATH
will define and create $HOME/work as your local GOPATH. The go tool
itself will create three subdirectories inside your GOPATH when required;
src, pkg and bin, which hold the source of Go programs, compiled packages
and compiled binaries, respectively.
Setting GOPATH correctly is critical when developing Go programs. Set and
export it as part of your login script.
Add $GOPATH/bin to your PATH, so you can run the go programs you install:
PATH="$PATH:$GOPATH/bin"
The easiest way to get the source for snappy is to use the go get command.
go get -d -v launchpad.net/snappy-ubuntu/snappy-golang/...
This command will checkout the source of snappy and inspect it for any unmet
Go package dependencies, downloading those as well. go get will also build
and install snappy and its dependencies. To checkout without installing, use
the -d flag. More details on the go get flags are available using
go help get
At this point you will have the git local repository of the snappy source at
$GOPATH/launchpad.net/snappy-ubuntu/snappy-golang. The source for any
dependent packages will also be available inside $GOPATH.
To build, once the sources are available and GOPATH is set, you can just run
go build launchpad.net/snappy-ubuntu/snappy-golang/cmd/snappy
to get the snappy binary in your current working directory or
go install launchpad.net/snappy/...
to have it available in $GOPATH/bin
