If you have Prism Launcher, the best way to install this is to import the following instance. It comes pre-bundled with packwiz-installer-bootstrap, as well as a pre-configured pre-launch command which will keep the instance up-to-date.

https://b2.nullbite.com/file/nullbite-personal/fabric-lite/fabric-lite-minecraft-1.20.1.zip

Alternatively, install the .mrpack files from the releases section.

Credits

Shaders

BSL - CaptTatsu (https://bitslablab.com/)
Complementary Shaders v4 - EminGT (https://modrinth.com/shader/complementary-shaders-v4)
Complementary Reimagined - EminGT (https://modrinth.com/shader/complementary-reimagined)
Rethinking Voxels - gri573, EnimGT (https://modrinth.com/shader/rethinking-voxels)
MakeUp - javiergchim (https://modrinth.com/shader/makeup-ultra-fast-shaders)
VanillAA - leo60228 (https://github.com/leo60228/VanillAA-Shaders)

Mods

AppleSkin - squeek502 (https://github.com/squeek502/AppleSkin)
Architectury API - shedaniel (https://github.com/architectury/architectury)
Auth Me - axieum (https://github.com/axieum/authme)
BetterF3 - treyruffy (https://github.com/cominixo/BetterF3)
Better Mount HUD - Lortseam (https://github.com/Lortseam/better-mount-hud)
Borderless Mining - comp500 (https://github.com/comp500/BorderlessMining)
Capes - caelthecolher (https://github.com/CaelTheColher/Capes)
Carpet-Fixes - fxmorin (https://github.com/fxmorin/carpet-fixes)
Carpet - gnembon (https://github.com/gnembon/fabric-carpet)
CIT Resewn - shsupercm (https://github.com/SHsuperCM/CITResewn)
Cloth Config API - shedaniel (https://github.com/shedaniel/ClothConfig/)
Continuity - peppercode1 (https://github.com/PepperCode1/Continuity)
Cull Less Leaves - isxander (https://github.com/isXander/CullLessLeaves)
DashLoader - alphaqu (https://github.com/alphaqu/DashLoader)
Dynamic FPS - juliand665 (https://github.com/juliand665/Dynamic-FPS)
Entity Culling - tr7zw (https://github.com/tr7zw/EntityCulling)
Entity Model Features [CEM] - Traben (https://github.com/Traben-0/Entity_Model_Features)
Entity Texture Features - Traben (https://github.com/Traben-0/Entity_Texture_Features)
Fabric API - sfPlayer1, modmuss50 (https://github.com/FabricMC/fabric)
Fabric Language Kotlin - modmuss50 (https://github.com/FabricMC/fabric-language-kotlin/)
FabricSkyboxes - AMereBagatelle (https://github.com/AMereBagatelle/fabricskyboxes)
FabricSkyBoxes Interop - FlashyReese (https://github.com/FlashyReese/fabricskyboxes-interop)
FerriteCore - malte0811 (https://github.com/malte0811/FerriteCore)
Figura - Fran (https://github.com/Kingdom-of-The-Moon/FiguraRewriteRewrite)
ImmediatelyFast - RaphiMC (https://github.com/RaphiMC/ImmediatelyFast)
Indium - comp500 (https://github.com/comp500/Indium)
Inventory Profiles Next - blackd (https://github.com/blackd/Inventory-Profiles)
Iris Shaders - coderbot (https://github.com/IrisShaders/Iris)
Krypton - astei (https://github.com/astei/krypton)
LambDynamicLights - LambdAurora (https://github.com/LambdAurora/LambDynamicLights)
- Custom build from Pull Request #156
Language Reload - Jerozgen (https://github.com/Jerozgen/LanguageReload)
libIPN - blackd (https://github.com/blackd/libIPN)
Lithium - jellysquid3 (https://github.com/jellysquid3/lithium-fabric)
Memory Leak Fix - fxmorin (https://github.com/fxmorin/memoryLeakFix)
MidnightControls - Motschen (https://github.com/TeamMidnightDust/MidnightControls)
MixinTrace - comp500 (https://github.com/comp500/mixintrace)
Mod Menu - Prospector (https://github.com/TerraformersMC/ModMenu)
MoreChatHistory - JackFred2 (https://github.com/JackFred2/MoreChatHistory)
Mouse Tweaks - YaLTeR (https://github.com/YaLTeR/MouseTweaks)
No Chat Reports - Aizistral (https://github.com/Aizistral-Studios/No-Chat-Reports)
OptiGUI - opekope2 (https://github.com/opekope2/OptiGUI)
Presence Footsteps - Sollace (https://github.com/Sollace/Presence-Footsteps)
Puzzle - Motschen (https://github.com/PuzzleMC/Puzzle)
Reese's Sodium Options - FlashyReese (https://github.com/FlashyReese/reeses-sodium-options)
Roughly Enough Items (REI) - shedaniel (https://github.com/shedaniel/RoughlyEnoughItems)
Screenshot to Clipboard - comp500 (https://github.com/comp500/ScreenshotToClipboard)
Sodium Extra - FlashyReese (https://github.com/FlashyReese/sodium-extra-fabric)
Sodium - jellysquid3 (https://github.com/CaffeineMC/sodium-fabric)
spark - lucko (https://github.com/lucko/spark)
Starlight (Fabric) - spottedleaf (https://github.com/PaperMC/Starlight)
Xaero's Minimap - thexaero (https://modrinth.com/mod/xaeros-minimap)
Xaero's World Map - thexaero (https://modrinth.com/mod/xaeros-world-map)
YetAnotherConfigLib - isxander (https://github.com/isXander/YetAnotherConfigLib)
Your Options Shall Be Respected (YOSBR) - shedaniel (https://github.com/shedaniel/your-options-shall-be-respected)
Zoomify - isxander (https://github.com/isXander/Zoomify)