Merge remote-tracking branch 'upstream/dev/0.12' into dev/0.12.0

# Conflicts:
#	.github/workflows/test.yml
#	bootstrap/test-project/build.gradle
#	build.gradle
#	src/main/java/net/fabricmc/loom/LoomGradlePlugin.java
#	src/main/java/net/fabricmc/loom/LoomRepositoryPlugin.java
#	src/main/java/net/fabricmc/loom/api/MixinExtensionAPI.java
#	src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
#	src/main/java/net/fabricmc/loom/configuration/ifaceinject/InterfaceInjectionProcessor.java
#	src/main/java/net/fabricmc/loom/configuration/mods/ModProcessor.java
#	src/main/java/net/fabricmc/loom/configuration/providers/mappings/MappingsProviderImpl.java
#	src/main/java/net/fabricmc/loom/configuration/providers/minecraft/MinecraftJarConfiguration.java
#	src/main/java/net/fabricmc/loom/configuration/providers/minecraft/MinecraftProvider.java
#	src/main/java/net/fabricmc/loom/configuration/providers/minecraft/assets/MinecraftAssetsProvider.java
#	src/main/java/net/fabricmc/loom/configuration/providers/minecraft/mapped/AbstractMappedMinecraftProvider.java
#	src/main/java/net/fabricmc/loom/extension/LoomGradleExtensionApiImpl.java
#	src/main/java/net/fabricmc/loom/extension/LoomGradleExtensionImpl.java
#	src/main/java/net/fabricmc/loom/task/AbstractRunTask.java
#	src/main/java/net/fabricmc/loom/task/RemapJarTask.java
#	src/main/java/net/fabricmc/loom/task/launch/GenerateDLIConfigTask.java
#	src/main/java/net/fabricmc/loom/task/service/TinyRemapperService.java
#	src/main/java/net/fabricmc/loom/util/Constants.java
#	src/main/java/net/fabricmc/loom/util/ModUtils.java
#	src/main/kotlin/net/fabricmc/loom/kotlin/remapping/KotlinMetadataTinyRemapperExtensionImpl.kt
#	src/test/kotlin/net/fabricmc/loom/test/kotlin/KotlinClassMetadataRemappingAnnotationVisitorTest.kt
#	src/test/resources/projects/kotlin/build.gradle.kts

.github/workflows/test.yml

@@ -1,11 +1,11 @@
 name: Run Tests
-on: [ push, pull_request ]
+on: [push, pull_request]
 jobs:
   build:
     strategy:
       fail-fast: false
       matrix:
-        version: [ 7.3.1-jdk17 ]
+        version: [7.4.0-jdk17]
     runs-on: ubuntu-20.04
     container:
       image: gradle:${{ matrix.version }}
@@ -22,13 +22,14 @@ jobs:
 
     runs-on: ubuntu-20.04
     container:
-      image: gradle:7.3.1-jdk17
+      image: gradle:7.4.0-jdk17
       options: --user root
 
     steps:
       - uses: actions/checkout@v2
       - run: gradle writeActionsTestMatrix --stacktrace --warning-mode fail
-      - id: set-matrix
+      -
+        id: set-matrix
         run: echo "::set-output name=matrix::$(cat build/test_matrix.json)"
 
     outputs:
@@ -40,7 +41,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: [7.3.1-jdk17]
+        version: [7.4.0-jdk17]
         test: ${{ fromJson(needs.prepare_test_matrix.outputs.matrix) }}
 
     runs-on: ubuntu-20.04
@@ -66,7 +67,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ 17 ]
+        java: [17]
         test: ${{ fromJson(needs.prepare_test_matrix.outputs.matrix) }}
 
     runs-on: windows-2022
@@ -86,3 +87,28 @@ jobs:
         with:
           name: ${{ matrix.test }} (${{ matrix.java }}) Results
           path: build/reports/
+
+  # Special case this test to run across all os's
+  reproducible_build_test:
+    needs: build
+
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ 17 ]
+        os: [ windows-2022, ubuntu-20.04, macos-11 ]
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+
+      - run: ./gradlew test --tests *ReproducibleBuildTest --stacktrace --warning-mode fail
+
+      - uses: actions/upload-artifact@v2
+        if: ${{ failure() }}
+        with:
+          name: Reproducible Build ${{ matrix.os }} (${{ matrix.java }}) Results
+          path: build/reports/