another attempt to build.

Author: sean-parent

Diff for: .github/workflows/stlab.yml

@@ -107,7 +107,7 @@ jobs:
         shell: bash
         run: |
           mkdir ../build
-          cmake -S. -B../build -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=23
+          cmake -S. -B../build -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=20
 
       - name: Configure // Linux Emscripten
         if: ${{ startsWith(matrix.config.compiler, 'emscripten') }}
@@ -121,7 +121,7 @@ jobs:
         if: ${{ startsWith(matrix.config.os, 'windows') }}
         shell: cmd
         run: |
-          call "C:\Program Files (x86)\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
+          call vcvarsall.bat x64
           mkdir ..\build
           cmake -S. -B../build -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=20 -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake
 
@@ -135,7 +135,7 @@ jobs:
         if: ${{ startsWith(matrix.config.os, 'windows') }}
         shell: cmd
         run: |
-          call "C:\Program Files (x86)\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
+          call vcvarsall.bat x64
           cmake --build ../build/
 
       - name: Test

Diff for: stlab/concurrency/channel.hpp

@@ -1523,7 +1523,7 @@ class STLAB_NODISCARD() receiver {
 
         if (_ready) throw channel_error(channel_error_codes::process_already_running);
 
-        auto executor = std::move(ap._annotations._executor.value_or(_p->executor()));
+        auto executor = ap._annotations._executor.value_or(_p->executor());
         auto p = std::make_shared<detail::shared_process<
             detail::default_queue_strategy<T>, F, detail::yield_type<unwrap_reference_t<F>, T>, T>>(
             executor, std::move(ap._f), _p);