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README
Castle
I really like having sandboxes baked into cabal-install (see Cabal Sandboxes for more information).
I got tired of waiting for big packages like Yesod and Lens to compile in project after project that used them. However, I still didn't want to install them in the user database. I wanted to maintain some sandboxing among a group of projects that all share a common set of packages, but I wanted to be able to switch from them or upgrade them easily.
That's the itch I was trying to scratch with castle
.
It allows you to share one Cabal sandbox between multiple projects. This keeps the package versions for all of these projects in line. It also means that you don't have to constantly be re-installing everything, but you still get the ability to blow away a set of packages without borking your whole system.
Usage
First, we need to create a new Castle for a new sandbox. We'll use this one for Yesod projects.
castle new yesod
Now let's change into a project where we want to use that castle and set up the configuration for it.
cd awesome-site
castle use yesod
This works by putting the cabal.sandbox.config
file for the yesod
Castle
into the current directory. From this point on, cabal
should pick up on the
location of the sandbox and everything should work seamlessly.
If something happens and you want to use a local, not-shared sandbox for this
project, just use the remove
command:
castle remove
And if you decide that you no longer need the Castle for any project, you can delete it.
castle delete yesod
Help
You can get an overview of the commands by executing castle --help
:
$ castle --help
castle - manage shared cabal sandboxes.
Usage: castle COMMAND
Manage shared cabal sandboxes.
Available options:
-h,--help Show this help text
Available commands:
list List sand castles.
new Create a new castle.
use Use an existing castle.
current Display the current castle name.
remove Removes the sandbox from the current directory.
delete Deletes the castle.
clear Clears a castle by deleting and re-creating it.
search Searches for a castle with a name containing the QUERY.
Likewise, for more information about a specific command, call --help
on that
command.
$ castle new --help
Usage: castle new CASTLE_NAME
Create a new castle.
Available options:
-h,--help Show this help text
CASTLE_NAME The name of the castle to create.
Bug Reports
Please report any bugs to the Github Issues page for this project.