1. First you need to give sapling access to an ssh key that has access to your github account. You have two options:

   1. First, you can add an ssh key to sapling. If you've followed the sapling-guide for legion you'll have already done this. If not, on sapling run

      $ ssh-keygen -t ed25519  
      ... (either choose a password or enter an empty one)
      

      Once your key has been created, you can get your public key by running

      $ cat ~/.ssh/id_ed25519.pub
      

      which you can add to your GitHub account by following the instructions here.

   2. Alternatively, you can give sapling access to your local ssh key. To do so, you'll need to spin up an ssh-agent on your local machine, and then configure ssh access to share the ssh-agent through your ssh connections to sapling. More concretely, on your local machine run

   eval $(ssh-agent)
   ssh-add
   

   and type in your ssh password if prompted. This spins up a background process for managing your ssh key. Now you need to share that agent across your ssh connection, which we can do by modifying the ~/.ssh/config file on your local machine. You'll need to append the following lines to that file:

   Host sapling.stanford.edu
     ForwardAgent yes
   

   Note that you'll need to restart any existing ssh connections.

2. If you did the previous step correctly, when you run ssh -T [email protected] on sapling you should see something to the effect of

$ ssh -T [email protected]
Hi <your-github-id>! You've successfully authenticated, but GitHub does not provide shell access.

Now we'll actually get the repostory set up. To do so, perform the following

$ curl 'https://raw.githubusercontent.com/flexflow/sapling-guide/master/repo-refactor.sh' | bash
...
$ source ~/.bashrc
...
$ cd "$HOME/ff"
...
$ nix develop --accept-flake-config
... (this will take a while the first time) ...
$ ffpr 622 repo-refactor

Here you should see a interactive prompt for information related to GitHub.

1. Select "GitHub.com"
2. Select "SSH"
3. Select "Yes"
4. Select "Paste an authentication token"
5. Now go to https://github.com/settings/tokens and click "Generate new token" in the top right-hand corner, in the dropdown that appears select "Generate new token (classic)"
6. You should see a text field called "Note". Enter the name "sapling" (this is just a note to yourself about what this key is for)
7. Under "Expiration" select "90 days"
8. Under "Select scopes" check the following check boxes: repo, read:org, and admin:public_key
9. Click "Generate token"
10. You should now see a key beginning with ghp_. Copy this, save it somewhere to your computer safe (if you lose it, github won't show it to you again)
11. Copy the key beginning with ghp_ into the prompt "Paste your authentication token:" and hit enter.
12. You should now see a message that says "Logged in as <your github username>", followed by a bunch of output from git as it clones the FlexFlow repository. Once that's done continue with the instructions below:

$ cd repo-refactor
...
$ nix develop --accept-flake-config
... (this will take a while the first time) ...
$ proj cmake
...
$ proj test
... (you should see a test run and pass here. if that is not the case contact @lockshaw)

TODO