Arcanist - Phabricator CLI

Updated 265 Days AgoPublic

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Arcanist

Arcanist is a CLI tool that helps you submit your code changes for code review. You can use it to

• create, submit and update diffs (arc diff);
• land the changes after they've been reviewed (arc land - this equivalent to a "Merge");
• run unit tests and check code coverage (arc lint, arc unit)

Installing Arcanist and the linters

Make sure you have php installed in your system.

mkdir -p ~/bin
cd ~/bin
git clone https://we.phorge.it/source/arcanist.git arcanist
git clone https://hub.sealcode.org/diffusion/124/arcanist-linters.git
git clone https://github.com/sealcode/arc-unit-mocha.git
ln -s arcanist/bin/arc arc

# Add ~/bin to your `PATH` variable, if it's not there already:

echo "export PATH=\$PATH:$HOME/bin" >> ~/.bashrc
echo "export PATH=\$PATH:$HOME/bin" >> ~/.zshrc

# restart the terminal and check if this command:

which arc

# returns: /home/<your_username>/bin/arc
# If it returns something else, like /usr/bin/arc, then uninstall the arcanist package provided by your package manager

Configuration

Run:

# arc install-certificate https://hub.sealcode.org/

and follow the instruction. It's a one-time command that will save authorization info for the future.

Changing the default editor

Arcanist uses your shell's default text editor for diff messages. To pick your default editor, set the EDITOR env variable to an editor of your choice (you can do this in ~/.bashrc, ~/.bash_profile, or similar)

Using Arcanist

Arcanist is needed for smooth operation of the Review Workflow. Read more about how to use Arcanist in [this guide]https://hub.sealcode.org/w/sealhub_workflow/audyt-i-review/review-workflow/).

To quickly login and test if it's working properly, you can run:

arc install-certificate https://hub.sealcode.org

Then follow the instructions, and run

arc set-config phabricator.uri https://hub.sealcode.org
echo {} | arc call-conduit -- user.whoami

If you see a JSON output with your account data, arcanist is set up properly

Multiple concurrent reviews on the same repo

You can work on multiple tasks in the same local repository. While you're waiting for your changes on task to be reviewed, create a new branch starting from master, make some commits, and use arc diff again to submit a new revision for review.

Troubleshooting

Error: "Arc was unable to automagically make a name for this patch"

If after running arc patch for the same diff multiple times in the same repo you see a message like this:

Branch name arcpatch-D300 already exists; trying a new name.
Branch name arcpatch-D300_1 already exists; trying a new name.
Branch name arcpatch-D300_2 already exists; trying a new name.
Branch name arcpatch-D300_3 already exists; trying a new name.
 Exception 
Arc was unable to automagically make a name for this patch. Please clean up your working copy and try again.
(Run with `--trace` for a full exception trace.)

It means that arc ran out of branch names to keep your changes in.

* alpha
  arcpatch-D187
  arcpatch-D188
  arcpatch-D196
  arcpatch-D213_1
  arcpatch-D213_2
  arcpatch-D217
  arcpatch-D300_1
  arcpatch-D300_2
  arcpatch-D300_3
...

If you don't need those branches anymore, just delete them:

# git branch | cut -c3- | grep arcpatch- | xargs -n1 git branch -D

See https://secure.phabricator.com/T3277#33729 for more details

Exception: Source file ".pinterest-linters/__phutil_library_init__.php" failed to load.

Solutions

1. Add --recursive flag to the git clone used for cloning pinterest linters repo, or

2. In arcanist linters repo, run git submodule update --init

failed to load symbol DomDocument error

If you get this error, try installing the php-xml extension. On debian the command is:

sudo apt-get install php7.0-xml