Dependencies installation from gitlab is super slow

[dintores]

Hello everyone!
I am using v1 yarn. I encountered a problem with installing dependencies that are pulled from the gitlab repo

Environment

@org/main - package.json

• @org/libs
• @org/utils
• @org/service

@org/service - package.json

• @org/libs
• @org/utils
• @org/adapter-1
• @org/adapter-2
• @org/adapter-3

@org/adapter-(1, 2, 3) - package.json

• @org/libs
• @org/utils

@org/libs - package.json

• cronjs
• natsjs
• etc...

@org/utils - package.json

• empty

All packages from @org are links in dependencies like this:

"@org/libs": "git+ssh://git@gitlab.com:org/libs.git#master"
These are private repositories in the gitlab perimeter. You cannot move them to private npm or gitlab packages.

Problem:

1. Installing these dependencies takes up to 20-30 minutes.
2. If you increase the number of adapters to 20, the installation takes more than 2 hours.
3. Judging from the log with --verbose flag - for every package from org/adpater-2, it constantly requests @org/libs, @org/utils, even though it has already downloaded them in the first adapter.
4. Package resolve is the longest operation, while the installation itself takes no more than 30 seconds.

Question:
How can I speed up the installation of packages? Please, let me know what additional info I should provide to identify and resolve the issue

[MatrixFrog]

I've been noticing a lot of slowness too. Do you already have caching of the node_modules folder turned on?

https://blog.nimbleways.com/let-s-make-faster-gitlab-ci-cd-pipelines/