CI: don't run CI jobs if only another CI was changed

Also skip builds on non-Windows platforms when only Windows build files
have changed.

This should reduce the number of useless builds and the associated
waiting time and chance of spurious failures, freeing resources for
new PRs.

Closes #10742

10 files changed, 163 insertions, 0 deletions

diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 83cab5a7a..c7f6107d5 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   schedule:
     - cron: '0 0 * * 4'
 
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index 7eda654c7..520be7635 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -9,9 +9,28 @@ on:
     branches:
     - master
     - '*/ci'
+    paths-ignore:
+    - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
+    paths-ignore:
+    - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index deba3dd39..13f9ae749 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index e50011e54..6733c8932 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/ngtcp2-gnutls.yml b/.github/workflows/ngtcp2-gnutls.yml
index 56c0776f1..17f247112 100644
--- a/.github/workflows/ngtcp2-gnutls.yml
+++ b/.github/workflows/ngtcp2-gnutls.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/ngtcp2-quictls.yml b/.github/workflows/ngtcp2-quictls.yml
index 5ceefa589..913a100b7 100644
--- a/.github/workflows/ngtcp2-quictls.yml
+++ b/.github/workflows/ngtcp2-quictls.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/ngtcp2-wolfssl.yml b/.github/workflows/ngtcp2-wolfssl.yml
index ceb4c12a6..dab8ada02 100644
--- a/.github/workflows/ngtcp2-wolfssl.yml
+++ b/.github/workflows/ngtcp2-wolfssl.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 2fc33e89c..28bee2080 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/torture.yml b/.github/workflows/torture.yml
index c3ed35206..612ad6a4a 100644
--- a/.github/workflows/torture.yml
+++ b/.github/workflows/torture.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/wolfssl.yml b/.github/workflows/wolfssl.yml
index 08c15db49..86d859e6a 100644
--- a/.github/workflows/wolfssl.yml
+++ b/.github/workflows/wolfssl.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again