Temporary bundle of Slipstream Mod Manager 1.9.1 for the SteamDeck for FTL: Faster Than Light mods
Will be replaced eventually by a complete installer for Hyperspace on the Deck & Linux that'll just include the mod manager
If you're trying to install Hyperspace there is an official guide for the Steam Deck available at https://ftl-hyperspace.github.io/FTL-Hyperspace/install-guides/linux/ it includes all the information in this guide plus more, so just follow it.
If you're just trying to use non-Hyperspace mods on the Deck then just follow this guide.
Open Dolphin and navigate to your Downloads folder
Right click and Extract archive here
Navigate into the SlipstreamModManager_1.9.1-SteamDeck folder
Right click modman.command and select Run in Konsole
Go through slipstream's initial startup (assuming FTL was already installed)
Yes
Yes
Yes
Probably select Steam for this option 😄
Literally doesn't matter what you choose yes/no here
Profit, Slipstream is ready for use.
In the future just run modman.command again in Konsole with the right click option.