nrc-wrapper-go

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This was a small challenge for me.
I wanted to write something in a language that was new for me and I decided for Go and to translate/rewrite nrc-prism-wrapper in Go.
ThatCuteOne is still maintaining their project btw, so you might want to check it out too.

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It can run through Prism Launcher and Modrinth Launcher on Windows and Linux! (not on mac as I can't test that)
Once again most algorithms are NOT my own but those by ThatCuteOne, but everything after v1.0 and types.go is my work.

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It installs the mods in a seperate directory from all your other mods to prevent the launcher messing with them (only supported with fabric).
It also checks if the correct loader and loader version is installed to run the selected nrc modpack.

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Config:

The wrapper can be configured through environment variables

Variable	Description
NRC_PACK	This lets you choose, which nrc modpack to use; You can see available in the "NRC packs" tab in the GUI
NRC_MOD_DIR	This lets you change the directory the wrapper installs the nrc mods in (the default is mods/NoRiskClient; always mods for Forge)
LAUNCHER	The wrapper generally detects the launcher by itself, but in case it doesn't you have the option for prism or modrinth
PRISM_DIR	The data directory of Prism Launcher in case it's not the default location
MODRINTH_DIR	The data directory of Modrinth Launcher in case it's not the default location
NOTIFY	Set it to true|True|1 or false|False|0 to enable/disable notifications (enabled by default for modrinth)
STAGING	Lets you use the staging branch of NoRiskClient
NO_ERROR_ON_FAILED_DOWNLOAD/NEOFD	Set it to anything to stop crashing if a file fails downloading

Build it yourself

To build it yourself simply install Go and run

On Linux:

go build -tags json1 -o nrc-wrapper-go

or for Windows build on Linux (how I built the releases):

• install mingw-w64-gcc

GOOS=windows GOARCH=386 CGO_ENABLED=1 CXX=i686-w64-mingw32-g++ CC=i686-w64-mingw32-gcc go build -tags json1 -ldflags -H=windowsgui -o nrc-wrapper-go.exe

And on Windows:

• download mingw64 and add the bin directory to your path

go env -w CGO_ENABLED=1
go build -tags json1 -ldflags -H=windowsgui -o nrc-wrapper-go.exe

in the git repository.

The binary that you'll have now has to be added as the wrapper command of a supported Minecraft (check --packs for a list) instance in a supported Launcher.
Just launch and enjoy.

Add launcher Support

To support for another launcher, first look at how the supported ones are done and then implement the Launcher (here) and the Instance (here) interfaces and add the launcher to the LAUNCHERS and LAUNCHER_SUPPORT variables in launchers.go.

Important

• this is not official and not affiliated with NoRiskClient
  • if issues occur first look if this project is the cause
• first launch takes longer as it needs to download everything
• when running in Flatpak, you'll need to place the wrapper in a directory the app has full access to
  • when enabling NRC for a instance via the GUI, the permission will automatically given
• on Windows there is no way to replace the current process, so minecraft will just continue running if you terminate the instance from your launcher
  • managed to fix it with winjobs using a 5yo go package (i don't really know, what this is though :))