Update to use alpha.4 to build ourself

Makefile

 macos-ci:
 	python3 -u tools/ci.py \
 		-B download \
-		-T tools/gcc-9.jsonc \
-		-T2 tools/gcc-9.next.jsonc
+		-T tools/gcc-9.jsonc
 	mv _build/dds _build/dds-macos-x64
 
 linux-ci:
 	python3 -u tools/ci.py \
 		-B download \
-		-T tools/gcc-9.jsonc \
-		-T2 tools/gcc-9-static.jsonc
+		-T tools/gcc-9.jsonc
 	mv _build/dds _build/dds-linux-x64
 
 nix-ci:

azure-pipelines.yml

               echo Executing Build and Tests
               reg add HKLM\SYSTEM\CurrentControlSet\Control\FileSystem /v LongPathsEnabled /t REG_DWORD /d 1 /f || exit 1
               python -m pip install pytest pytest-xdist || exit 1
-              python -u tools/ci.py -B download -T tools\msvc.jsonc -T2 tools\msvc.next.jsonc || exit 1
+              python -u tools/ci.py -B download -T tools\msvc.jsonc || exit 1
               move _build\dds.exe _build\dds-win-x64.exe || exit 1
             displayName: Build and Test
           - publish: _build\dds-win-x64.exe

tools/bootstrap.py

     BootstrapPhase('bootstrap-p4.2', 'g++-8', 'cl.exe'),
     BootstrapPhase('bootstrap-p5.2', 'g++-9', 'cl.exe'),
     BootstrapPhase('0.1.0-alpha.3', 'g++-9', 'cl.exe'),
+    BootstrapPhase('0.1.0-alpha.4', 'g++-9', 'cl.exe'),
 ]
 
 HERE = Path(__file__).parent.absolute()

tools/ci.py

 
 class CIOptions(NamedTuple):
     toolchain: str
-    toolchain_2: str
 
 
 def _do_bootstrap_build(opts: CIOptions) -> None:
     if filename is None:
         raise RuntimeError(f'We do not have a prebuilt DDS binary for '
                            f'the "{sys.platform}" platform')
-    url = f'https://github.com/vector-of-bool/dds/releases/download/0.1.0-alpha.3/{filename}'
+    url = f'https://github.com/vector-of-bool/dds/releases/download/0.1.0-alpha.4/{filename}'
 
     print(f'Downloading prebuilt DDS executable: {url}')
     stream = urllib.request.urlopen(url)
         help='The toolchain to use for the CI process',
         required=True,
     )
-    parser.add_argument(
-        '--toolchain-2',
-        '-T2',
-        help='The toolchain to use for the self-build',
-        required=True,
-    )
     parser.add_argument(
         '--build-only',
         action='store_true',
         help='Only build the `dds` executable. Skip second-phase and tests.')
     args = parser.parse_args(argv)
 
-    opts = CIOptions(toolchain=args.toolchain, toolchain_2=args.toolchain_2)
+    opts = CIOptions(toolchain=args.toolchain)
 
     if args.bootstrap_with == 'build':
         _do_bootstrap_build(opts)
         paths.PREBUILT_DDS,
         toolchain=opts.toolchain,
         cat_path=old_cat_path,
-        cat_json_path=Path('catalog.old.json'),
+        cat_json_path=Path('catalog.json'),
         dds_flags=[('--repo-dir', ci_repo_dir)])
     print('Main build PASSED!')
     print(f'A `dds` executable has been generated: {paths.CUR_BUILT_DDS}')
     new_repo_dir = paths.BUILD_DIR / 'ci-repo'
     self_build(
         paths.CUR_BUILT_DDS,
-        toolchain=opts.toolchain_2,
+        toolchain=opts.toolchain,
         cat_path=new_cat_path,
         dds_flags=[f'--repo-dir={new_repo_dir}'])
     print('Bootstrap test PASSED!')

tools/freebsd-gcc-9.jsonc

     "compiler_id": "gnu",
     "c_compiler": "gcc9",
     "cxx_compiler": "g++9",
-    "flags": [
-        "-DSPDLOG_COMPILED_LIB", // Required to use a compiled spdlog
-        "-Werror=return-type",
+    "warning_flags": [
+        "-Werror",
     ],
     "cxx_flags": [
         "-fconcepts",

tools/freebsd-gcc-9.next.jsonc

-{
-    "$schema": "../res/toolchain-schema.json",
-    "compiler_id": "gnu",
-    "c_compiler": "gcc9",
-    "cxx_compiler": "g++9",
-    "warning_flags": [
-        "-Werror",
-    ],
-    "cxx_flags": [
-        "-fconcepts",
-        "-std=c++2a",
-    ],
-    "link_flags": [
-        "-static-libgcc",
-        "-static-libstdc++",
-    ],
-    // "debug": true,
-    "optimize": true,
-    "compiler_launcher": "ccache"
-}

tools/gcc-9.jsonc

     "compiler_id": "gnu",
     "c_compiler": "gcc-9",
     "cxx_compiler": "g++-9",
-    "flags": [
-        "-DSPDLOG_COMPILED_LIB", // Required to use a compiled spdlog
-        "-Werror=return-type",
-        // "-fsanitize=address",
+    "warning_flags": [
+        "-Werror",
     ],
     "cxx_flags": [
         "-fconcepts",
     "link_flags": [
         "-static-libgcc",
         "-static-libstdc++"
-        // "-fsanitize=address",
-        // "-fuse-ld=lld",
     ],
     // "debug": true,
     "optimize": true,

tools/gcc-9.next.jsonc

-{
-    "$schema": "../res/toolchain-schema.json",
-    "compiler_id": "gnu",
-    "c_compiler": "gcc-9",
-    "cxx_compiler": "g++-9",
-    "warning_flags": [
-        "-Werror",
-    ],
-    "cxx_flags": [
-        "-fconcepts",
-        "-std=c++2a",
-    ],
-    "link_flags": [
-        "-static-libgcc",
-        "-static-libstdc++"
-    ],
-    // "debug": true,
-    "optimize": true,
-    "compiler_launcher": "ccache"
-}

tools/msvc.jsonc

     "$schema": "../res/toolchain-schema.json",
     "compiler_id": "msvc",
     "flags": [
-        "/Zc:preprocessor", // Required for range-v3
-        "/DSPDLOG_COMPILED_LIB", // Required to use spdlog as a compiled lib
+        "/Zc:preprocessor",
         "/std:c++latest",
     ],
     "link_flags": [

tools/msvc.next.jsonc

-{
-    "$schema": "../res/toolchain-schema.json",
-    "compiler_id": "msvc",
-    "flags": [
-        "/Zc:preprocessor",
-        "/std:c++latest",
-    ],
-    "link_flags": [
-        "rpcrt4.lib",
-    ],
-    // "debug": true,
-    "optimize": true
-}