build: switch toolchain to MC 26.1.2 (intermediary retired)

- net.fabricmc.fabric-loom 1.16-SNAPSHOT (no remap; MC 26.1+ ships unobfuscated)
- gradle.properties: minecraft_version=26.1.2, loader=0.19.2, fabric-api=0.149.0+26.1.2
- Java 25 toolchain
- fabric.mod.json: fabricloader>=0.19.0, java>=25
- Drop multi-version build script + matrix CI (single-target now)
- Backup of 1.21.6/7/8 working tree preserved on mc-1.21.x branch

Source migration to Mojmap names is in progress on follow-up commits;
this commit alone will not build until source files are ported.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -1,4 +1,4 @@
-name: build-matrix
+name: build
 
 on:
   push:
@@ -9,33 +9,15 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - mc: "1.21.6"
-            yarn: "1.21.6+build.1"
-            fabric: "0.120.1+1.21.6"
-          - mc: "1.21.7"
-            yarn: "1.21.7+build.8"
-            fabric: "0.129.0+1.21.7"
-          - mc: "1.21.8"
-            yarn: "1.21.8+build.1"
-            fabric: "0.136.1+1.21.8"
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 21
-      - name: Build (MC ${{ matrix.mc }})
-        run: |
-          ./gradlew --no-daemon \
-            -Pminecraft_version=${{ matrix.mc }} \
-            -Pyarn_mappings=${{ matrix.yarn }} \
-            -Pfabric_version=${{ matrix.fabric }} \
-            build
+          java-version: 25
+      - name: Build (MC 26.1.2)
+        run: ./gradlew --no-daemon build
       - uses: actions/upload-artifact@v4
         with:
-          name: video_player-mc${{ matrix.mc }}
+          name: video_player-mc26.1.2
           path: build/libs/*.jar

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'fabric-loom' version '1.16.2'
+    id 'net.fabricmc.fabric-loom' version "${loom_version}"
     id 'maven-publish'
     id 'java'
 }
@@ -16,11 +16,16 @@ repositories {
     maven { url = 'https://maven.fabricmc.net/' }
 }
 
+loom {
+    // Intentionally empty — MC 26.1+ ships unobfuscated, so the new loom does not remap.
+}
+
 dependencies {
+    // No mappings dep — Mojang ships official names since 26.1, intermediary is gone.
     minecraft "com.mojang:minecraft:${project.minecraft_version}"
-    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
-    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
-    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+
+    implementation "net.fabricmc:fabric-loader:${project.loader_version}"
+    implementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
 }
 
 processResources {
@@ -28,27 +33,24 @@ processResources {
     inputs.property "mod_id", project.mod_id
     inputs.property "minecraft_version", project.minecraft_version
 
-    // Pin the fabric.mod.json's minecraft constraint to the build's exact target — keeps each
-    // multi-version jar from claiming compatibility it doesn't have.
-    def mc = project.minecraft_version
-    def target = "~${mc}"
-
     filesMatching("fabric.mod.json") {
-        expand "version": project.version, "mod_id": project.mod_id, "target_minecraft": target
+        expand "version": project.version,
+               "mod_id": project.mod_id,
+               "target_minecraft": "~${project.minecraft_version}"
     }
 }
 
 tasks.withType(JavaCompile).configureEach {
-    it.options.release = 21
+    it.options.release = 25
 }
 
 java {
     withSourcesJar()
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_25
+    targetCompatibility = JavaVersion.VERSION_25
 
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 

gradle.properties

@@ -1,14 +1,16 @@
 org.gradle.jvmargs=-Xmx2G
 org.gradle.parallel=true
+# Config cache disabled — new loom + IntelliJ aren't fully compatible yet
+org.gradle.configuration-cache=false
 
 # Mod
 mod_id=video_player
-mod_version=0.2.0
+mod_version=0.3.0
 maven_group=com.ejclaw.videoplayer
 archives_base_name=video_player
 
-# Minecraft / Fabric (1.21.6)
-minecraft_version=1.21.6
-yarn_mappings=1.21.6+build.1
+# Minecraft / Fabric (26.1.2 — single target, intermediary/Yarn retired)
+minecraft_version=26.1.2
 loader_version=0.19.2
-fabric_version=0.120.1+1.21.6
+loom_version=1.16-SNAPSHOT
+fabric_version=0.149.0+26.1.2

scripts/build-multiver.sh

@@ -1,32 +0,0 @@
-#!/usr/bin/env bash
-# Build the mod against all supported MC versions and collect jars under build/multiver/.
-# Uses gradle property overrides so we don't have to maintain three settings.gradle copies.
-set -euo pipefail
-
-cd "$(dirname "$0")/.."
-
-OUT=build/multiver
-rm -rf "$OUT"
-mkdir -p "$OUT"
-
-build_one() {
-  local mc="$1" yarn="$2" fab="$3"
-  echo "==> Building for MC $mc (yarn=$yarn, fabric-api=$fab)"
-  ./gradlew --no-daemon \
-    -Pminecraft_version="$mc" \
-    -Pyarn_mappings="$yarn" \
-    -Pfabric_version="$fab" \
-    build
-  # main jar = the one without "-sources"
-  local jar
-  jar=$(ls build/libs/video_player-*.jar | grep -v -- '-sources' | head -1)
-  cp "$jar" "$OUT/video_player-mc${mc}.jar"
-}
-
-build_one 1.21.6 1.21.6+build.1 0.120.1+1.21.6
-build_one 1.21.7 1.21.7+build.8 0.129.0+1.21.7
-build_one 1.21.8 1.21.8+build.1 0.136.1+1.21.8
-
-echo
-echo "All jars:"
-ls -la "$OUT"

src/main/resources/fabric.mod.json

@@ -16,9 +16,9 @@
     "client": [ "com.ejclaw.videoplayer.VideoPlayerClient" ]
   },
   "depends": {
-    "fabricloader": ">=0.16.0",
+    "fabricloader": ">=0.19.0",
     "fabric-api": "*",
     "minecraft": "${target_minecraft}",
-    "java": ">=21"
+    "java": ">=25"
   }
 }