diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
deleted file mode 100644
index ec6b4c7f1..000000000
--- a/.github/workflows/docs.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-name: Build docs
-
-on:
-  pull_request:
-    paths:
-      - docs/**
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v1
-    - name: Install Python packages
-      run: pip install Sphinx
-    - name: Build docs
-      run: make -C docs/ html
diff --git a/.github/workflows/ports_javascript.yml b/.github/workflows/ports_javascript.yml
deleted file mode 100644
index 244dc966a..000000000
--- a/.github/workflows/ports_javascript.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-name: javascript port
-
-on:
-  push:
-  pull_request:
-    paths:
-      - '.github/workflows/*.yml'
-      - 'tools/**'
-      - 'py/**'
-      - 'extmod/**'
-      - 'lib/**'
-      - 'ports/javascript/**'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_javascript_setup
-    - name: Build
-      run: source tools/ci.sh && ci_javascript_build
-    - name: Run tests
-      run: source tools/ci.sh && ci_javascript_run_tests
diff --git a/.github/workflows/ports_unix.yml b/.github/workflows/ports_unix.yml
deleted file mode 100644
index 63cc1c0fa..000000000
--- a/.github/workflows/ports_unix.yml
+++ /dev/null
@@ -1,230 +0,0 @@
-name: unix port
-
-on:
-  push:
-  pull_request:
-    paths:
-      - '.github/workflows/*.yml'
-      - 'tools/**'
-      - 'py/**'
-      - 'extmod/**'
-      - 'lib/**'
-      - 'examples/**'
-      - 'ports/unix/**'
-      - 'tests/**'
-
-jobs:
-  minimal:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_minimal_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_minimal_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  reproducible:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build with reproducible date
-      run: source tools/ci.sh && ci_unix_minimal_build
-      env:
-        SOURCE_DATE_EPOCH: 1234567890
-    - name: Check reproducible build date
-      run: echo | ports/unix/micropython-minimal -i | grep 'on 2009-02-13;'
-
-  standard:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_standard_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_standard_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  dev:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_dev_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_dev_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  coverage:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_coverage_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_coverage_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_coverage_run_tests
-    - name: Test merging .mpy files
-      run: source tools/ci.sh && ci_unix_coverage_run_mpy_merge_tests
-    - name: Build native mpy modules
-      run: source tools/ci.sh && ci_native_mpy_modules_build
-    - name: Test importing .mpy generated by mpy_ld.py
-      run: source tools/ci.sh && ci_unix_coverage_run_native_mpy_tests
-    - name: Run gcov coverage analysis
-      run: |
-        (cd ports/unix && gcov -o build-coverage/py ../../py/*.c || true)
-        (cd ports/unix && gcov -o build-coverage/extmod ../../extmod/*.c || true)
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
-      with:
-        fail_ci_if_error: true
-        verbose: true
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  coverage_32bit:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_32bit_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_coverage_32bit_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_coverage_32bit_run_tests
-    - name: Build native mpy modules
-      run: source tools/ci.sh && ci_native_mpy_modules_32bit_build
-    - name: Test importing .mpy generated by mpy_ld.py
-      run: source tools/ci.sh && ci_unix_coverage_32bit_run_native_mpy_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  nanbox:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_32bit_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_nanbox_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_nanbox_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  float:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_float_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_float_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  stackless_clang:
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_clang_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_stackless_clang_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_stackless_clang_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  float_clang:
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_clang_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_float_clang_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_float_clang_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  settrace:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_settrace_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_settrace_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  settrace_stackless:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: source tools/ci.sh && ci_unix_settrace_stackless_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_settrace_stackless_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  macos:
-    runs-on: macos-11.0
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
-      with:
-        python-version: '3.8'
-    - name: Build
-      run: source tools/ci.sh && ci_unix_macos_build
-    - name: Run tests
-      run: source tools/ci.sh && ci_unix_macos_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  qemu_mips:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_qemu_mips_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_qemu_mips_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_qemu_mips_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures
-
-  qemu_arm:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install packages
-      run: source tools/ci.sh && ci_unix_qemu_arm_setup
-    - name: Build
-      run: source tools/ci.sh && ci_unix_qemu_arm_build
-    - name: Run main test suite
-      run: source tools/ci.sh && ci_unix_qemu_arm_run_tests
-    - name: Print failures
-      if: failure()
-      run: tests/run-tests.py --print-failures