Vndr is simple vendoring tool, which is inspired by Docker vendor script. Vndr has only two options: -verbose and -whitelist, both of which do exactly what they say on the tin.

• -verbose adds additional output, helpful for debugging issues.
• -whitelist allows you to specify several regular expressions for paths which will not be cleaned in the final stage of vendoring -- this is useful for running tests in a vendored project or otherwise ensuring that some important files are retained after vndr is done cleaning unused files from your vendor/ directory.

vendor.conf is the configuration file of `vndr. It must have multiple lines, which have format:

Import path               | revision                               | Repository(optional)
github.com/example/example 03a4d9dcf2f92eae8e90ed42aa2656f63fdd0b14 https://github.com/LK4D4/example.git

You can use Repository field for vendoring forks instead of original repos. This config format is also accepted by trash.

You can initiate your project with vendor directory and vendor.conf using command vndr init. This will populate your vendor directory with latest versions of all dependecies and also write vendor.conf config which you can use for changing versions later.

If you already have vendor.conf you can just change versions there as you like, set $GOPATH and run vndr in your repository with that file:

vndr

(Note: Your repository must be in proper place in $GOPATH, i.e. $GOPATH/src/github.com/LK4D4/vndr).

Also it's possible to vendor or update only one dependency:

vndr github.com/example/example 03a4d9dcf2f92eae8e90ed42aa2656f63fdd0b14 https://github.com/LK4D4/example.git

or

vndr github.com/example/example

to take revision and repo from vendor.conf.

If you experience any problems, please try to run vndr -verbose.

• vndr vendors only top packages, i.e. golang.org/x/net and not golang.org/x/net/trace. If there is "non-top" packages in vendor.conf, vndr might fail badly.
• if you use symlinks for managing GOPATH or packages in it, vndr might not be able to work properly.