mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-16 04:29:08 +00:00
77 lines
2.4 KiB
Markdown
77 lines
2.4 KiB
Markdown
Monorepo notes
|
|
==============
|
|
|
|
|
|
Generating
|
|
----------
|
|
|
|
Use the [create_monorepo] script to regenerate from current master(s).
|
|
|
|
[create_monorepo]: ../../create_monorepo.py
|
|
|
|
|
|
Structure
|
|
---------
|
|
|
|
This is a result of Git merge of several unrelated histories, each of which is
|
|
moved to its own subdirectory during the merge.
|
|
|
|
That means that this is actually all the original repos at the same time. You can
|
|
check out any historical commit hash, or any historical tag.
|
|
|
|
All tags from the previous history still exist, and in addition, each has a version
|
|
named by its directory. I.e., for trezor-mcu tag `v1.6.3`, you can also check out
|
|
`legacy/v1.6.3`.
|
|
|
|
|
|
Merging pre-existing branches
|
|
-----------------------------
|
|
|
|
Because the repository shares all the histories, merging a branch or PR can be done
|
|
with a simple `git merge`. It's often necessary to add hints to git by specifying a merge strategy - especially when some commits add new files.
|
|
|
|
Use the following options: `-s subtree -X subtree=<destdir>`.
|
|
|
|
Example for your local checkout:
|
|
|
|
$ git remote add core-local ~/git/trezor-core
|
|
$ git fetch core-local
|
|
$ git merge core-local/wip -s subtree -X subtree=core
|
|
|
|
Same options should be used for `git rebase` of a pre-existing branch.
|
|
|
|
|
|
Sub-repositories
|
|
----------------
|
|
|
|
The monorepo has two subdirectories that can be exported to separate repos:
|
|
|
|
* **common** exports to https://github.com/trezor/trezor-common
|
|
* **crypto** exports to https://github.com/trezor/trezor-crypto
|
|
|
|
These exports are managed with [git-subrepo] tool. To export all commits that touch
|
|
one of these directories, run the following command:
|
|
|
|
$ git subrepo push <dirname>
|
|
|
|
You will need commit access to the respective GitHub repository.
|
|
|
|
For installation instructions and detailed usage info, refer to the [git-subrepo] README.
|
|
|
|
[git-subrepo]: https://github.com/ingydotnet/git-subrepo
|
|
|
|
---
|
|
|
|
Sketch of further details:
|
|
|
|
What git-subrepo does under the hood is create and fetch a remote for the export,
|
|
check out `parent` revision and replay all commits since `commit` using
|
|
something along the lines of `git filter-branch --subdirectory-filter`.
|
|
|
|
So basically a nicely tuned git-subtree.
|
|
|
|
This can all be done manually if need be (or if you need more advanced usecases like
|
|
importing changes from the repo commit-by-commit, because git-subrepo will squash
|
|
on import). See [this nice article](https://medium.com/@porteneuve/mastering-git-subtrees-943d29a798ec)
|
|
for hints.
|