Migrate to modern yarn with pnpm linking

[Mikaela]

yarn lint fails since ➤ YN0060: │ eslint is listed by your project with version 9.7.0 (p456fe), which doesn't satisfy what typescript-eslint and other dependencies request (^8.56.0). and I am unsure on whether that is something I am causing.

Resolves: #475

[TheArcaneBrony]

I'm sure this'll stop exactly nobody but I have no idea how to deal with modern yarn under nix. As far as I can find, the only solution are ugly hacks, or shipping a package-lock.json for plain npm.

Ugly hacks are already in use to get draupnir to build with corepack: NixOS/nixpkgs#274052 (comment)

I would love to avoid a situation where I have to either choose to not use draupnir at all, or commit heinous crimes to patch all of this out to get it to compile at all.

[Mikaela]

Without the previous commit, which I think is wrong, the three errors are:

p15e0c → ✘ @typescript-eslint/utils@npm:7.16.1 [5bdff] doesn't provide typescript to @typescript-eslint/typescript-estree@npm:7.16.1 [394be] and 1 other dependency
p456fe → ✘ draupnir@workspace:. provides eslint@npm:9.7.0 to typescript-eslint@npm:7.16.1 [5cb8f] and 5 other dependencies
pc715b → ✘ draupnir@workspace:. doesn't provide matrix-bot-sdk to @gnuxie/matrix-protection-suite-for-matrix-bot-sdk@npm:1.3.0 [5cb8f]

I wonder if

• there is something wrong at https://github.com/Gnuxie/matrix-protection-suite package.json which current versions of package managers would dislike?
• this depends on chore(deps): update development dependencies #527 or Update Development Dependencies (major) #531 for eslint?

[Gnuxie]

why did this get added?

[Gnuxie]

pc715b → ✘ draupnir@workspace:. doesn't provide matrix-bot-sdk to @gnuxie/matrix-protection-suite-for-matrix-bot-sdk@npm:1.3.0 [5cb8f]

We use a new vector fork of the matrix-bot-sdk because of matrix-appservice-bridge, but depending on the version of matrix-appservice-bridge you use, they expect the vector fork to be aliased to "matrix-bot-sdk". The newer versions remove that alias.