WIP: github: Only run test-toolchain, test-ffmpeg and test-libcxx, detached from the rest

Author: mstorsjo

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
   # slightly more, when we know a separate build of the same version but with
   # assertions enabled, has passed some amount of tests.
   prepare:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     runs-on: ubuntu-latest
     outputs:
       LLVM_VERSION: ${{steps.get-versions.outputs.LLVM_VERSION}}
@@ -66,7 +66,7 @@ jobs:
 
   # Build a cross compiler for Linux, targeting Windows.
   linux:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [prepare]
     runs-on: ubuntu-22.04
     steps:
@@ -102,7 +102,7 @@ jobs:
   # Crosscompile the toolchain for running on Linux on a different architecture, bundle the runtime
   # libraries that were built in the 'linux' step above.
   linux-cross-aarch64:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [linux, prepare]
     runs-on: ubuntu-22.04
     steps:
@@ -157,7 +157,7 @@ jobs:
   # to better catch such bugs early. This makes the first-stage toolchain built
   # here in scheduled builds somewhat slower.
   linux-asserts:
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [prepare]
     runs-on: ubuntu-latest
     steps:
@@ -187,7 +187,7 @@ jobs:
 
   # Build a cross compiler for macOS, targeting Windows.
   macos:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [prepare]
     runs-on: macos-14
     steps:
@@ -225,7 +225,7 @@ jobs:
   # environments). The binaries built here rely on the runtime libraries from
   # the host environment (libstdc++ or libc++).
   msys2:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [prepare]
     runs-on: windows-latest
     defaults:
@@ -282,7 +282,7 @@ jobs:
   # llvm and make a proper standalone toolchain for Windows (for all 4
   # architectures). The binaries built here match actual releases quite closely.
   linux-cross-windows:
-    if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [linux, prepare]
     runs-on: ubuntu-latest
     strategy:
@@ -331,7 +331,6 @@ jobs:
   # toolchains from above.
   test-toolchain:
     if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
-    needs: [linux-cross-windows]
     defaults:
       run:
         shell: msys2 {0}
@@ -351,11 +350,9 @@ jobs:
           install: >-
             unzip
             make
-      - uses: actions/download-artifact@v4
-        with:
-          name: windows-ucrt-${{matrix.arch}}-toolchain
       - name: Unpack toolchain
         run: |
+          curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20250417/llvm-mingw-20250417-ucrt-${{matrix.arch}}.zip
           unzip -q llvm-mingw-*.zip
           rm llvm-mingw-*.zip
           mv llvm-mingw-* /llvm-mingw
@@ -441,7 +438,7 @@ jobs:
   # This also forces testing the bundled python executables.
   test-openmp:
     # Only running these tests in scheduled builds.
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [linux-cross-windows, prepare]
     runs-on: windows-latest
     strategy:
@@ -506,7 +503,7 @@ jobs:
   # above. This also forces testing the bundled python executables.
   test-compiler-rt:
     # Only running these tests in scheduled builds.
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [linux-cross-windows, prepare]
     runs-on: windows-latest
     strategy:
@@ -585,7 +582,7 @@ jobs:
   # enabled, to catch code generation bugs that might trigger asserts, to
   # find such regressions early.
   linux-test-cross-build-ffmpeg:
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     needs: [linux-asserts]
     runs-on: ubuntu-latest
     strategy:
@@ -630,8 +627,7 @@ jobs:
   # compiler itself, but that only show up at runtime. This is only done
   # for scheduled builds.
   test-ffmpeg:
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
-    needs: [linux-cross-windows]
+    if: true
     strategy:
       fail-fast: false
       matrix:
@@ -659,11 +655,9 @@ jobs:
             diffutils
           pacboy: >-
             nasm:p
-      - uses: actions/download-artifact@v4
-        with:
-          name: windows-ucrt-x86_64-toolchain
       - name: Unpack toolchain
         run: |
+          curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20250417/llvm-mingw-20250417-ucrt-${{matrix.arch}}.zip
           unzip -q llvm-mingw-*.zip
           rm llvm-mingw-*.zip
           mv llvm-mingw-* /llvm-mingw
@@ -685,7 +679,7 @@ jobs:
           make -j$(nproc) fate
 
   upload-nightly:
-    if: (github.event_name == 'schedule') && (github.repository == 'mstorsjo/llvm-mingw')
+    if: false
     permissions:
       contents: write
     needs: [linux, linux-cross-aarch64, macos, linux-cross-windows, test-toolchain, linux-test-cross-build-ffmpeg, test-ffmpeg]