From d71b03f75e266bda5fb7a6dc65b6a42d6c159bd0 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Tue, 2 Feb 2021 13:05:23 +0200
Subject: [PATCH] - specify continuous integration runners explicitly

this helps to avoid build issues when virtual environments are different between forks of the same repository
e.g., ubuntu-latest means 20.04 in upstream while it still points to 18.04 in a fork
---
 .github/workflows/continuous_integration.yml | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/continuous_integration.yml b/.github/workflows/continuous_integration.yml
index 4452f554b..a79851399 100644
--- a/.github/workflows/continuous_integration.yml
+++ b/.github/workflows/continuous_integration.yml
@@ -12,52 +12,52 @@ jobs:
         config:
         - {
             name: "Visual Studio 64-bit",
-            os: windows-latest,
+            os: windows-2019,
             extra_options: "-A x64",
             build_type: "Release"
           }
         - {
             name: "Visual Studio 64-bit",
-            os: windows-latest,
+            os: windows-2019,
             extra_options: "-A x64",
             build_type: "Debug"
           }
         - {
             name: "macOS",
-            os: macos-latest,
+            os: macos-10.15,
             extra_options: "-DDYN_FLUIDSYNTH=OFF -DDYN_OPENAL=OFF -DDYN_SNDFILE=OFF -DDYN_MPG123=OFF",
             deps_cmdline: "brew install fluidsynth mpg123 libsndfile",
             build_type: "Release"
           }
         - {
             name: "macOS",
-            os: macos-latest,
+            os: macos-10.15,
             build_type: "Debug"
           }
         - {
             name: "Linux GCC 7",
-            os: ubuntu-latest,
+            os: ubuntu-20.04,
             extra_options: "-DCMAKE_C_COMPILER=/usr/bin/gcc-7 -DCMAKE_CXX_COMPILER=/usr/bin/g++-7",
             deps_cmdline: "sudo apt update && sudo apt install libsdl2-dev libgtk2.0-dev",
             build_type: "RelWithDebInfo"
           }
         - {
             name: "Linux GCC 9",
-            os: ubuntu-latest,
+            os: ubuntu-20.04,
             extra_options: "-DCMAKE_C_COMPILER=/usr/bin/gcc-9 -DCMAKE_CXX_COMPILER=/usr/bin/g++-9",
             deps_cmdline: "sudo apt update && sudo apt install libsdl2-dev libgtk-3-dev",
             build_type: "Debug"
           }
         - {
             name: "Linux Clang 6",
-            os: ubuntu-latest,
+            os: ubuntu-20.04,
             extra_options: "-DCMAKE_C_COMPILER=clang-6.0 -DCMAKE_CXX_COMPILER=clang++-6.0",
             deps_cmdline: "sudo apt update && sudo apt install clang-6.0 libsdl2-dev",
             build_type: "Debug"
           }
         - {
             name: "Linux Clang 10",
-            os: ubuntu-latest,
+            os: ubuntu-20.04,
             extra_options: "-DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10 \
                             -DDYN_FLUIDSYNTH=OFF -DDYN_OPENAL=OFF -DDYN_SNDFILE=OFF -DDYN_MPG123=OFF",
             deps_cmdline: "sudo apt update && sudo apt install libsdl2-dev libopenal-dev libfluidsynth-dev libmpg123-dev libsndfile1-dev",