Expose console scripts that launch 6S in a subprocess

pyproject.toml

@@ -46,6 +46,16 @@ py6s = "^1.9.2"
 [tool.poetry.extras]
 wrapper = ["py6s", "python-dateutil"]
 
+[tool.poetry.scripts]
+# Expose console scripts that launch 6S in a subprocess.
+# These scripts have overhead compared to running 6S directly, but allow 6S to be usuable from PATH without any
+# additional steps after installation.
+# Alterively, we could expose 6S binaries directly using something like
+#      "sixsV1.1" = { reference =  "src/sixs_bin/sixsV1.1", type = "file }
+# but this results in the binary being duplicated in the wheel, which doubles their size.
+"sixsV1.1" = "sixs_bin._cli:_exec_11"
+"sixsV2.1" = "sixs_bin._cli:_exec_21"
+
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"

src/sixs_bin/_cli.py

@@ -67,6 +67,24 @@ def _make_version() -> str:
     return f"{sixs_bin.DISTRIBUTION_NAME} {sixs_bin.__version__} (6S {', '.join(sixs_bin._SIXS_BINARIES.keys())})"
 
 
+def _exec_subprocess(sixs_path: pathlib.Path) -> None:
+    """Execute the given 6S executable in a subprocess."""
+    proc_args = (sixs_path,)
+    ret_code = subprocess.Popen(proc_args).wait()
+    if ret_code:
+        raise subprocess.CalledProcessError(ret_code, proc_args)
+
+
+def _exec_11() -> None:
+    """Launch 6SV1.1 subprocess, bypassing main CLI entrypoint."""
+    _exec_subprocess(sixs_bin.get_path("1.1"))
+
+
+def _exec_21() -> None:
+    """Launch 6SV2.1 subprocess, bypassing main CLI entrypoint."""
+    _exec_subprocess(sixs_bin.get_path("2.1"))
+
+
 def main(cli_args: list[str]) -> None:
     """CLI entrypoint."""
     parser = _make_parser()
@@ -77,10 +95,7 @@ def main(cli_args: list[str]) -> None:
         return
 
     if args.exec is not None:
-        proc_args = (sixs_bin.get_path(args.exec),)
-        ret_code = subprocess.Popen(proc_args).wait()
-        if ret_code:
-            raise subprocess.CalledProcessError(ret_code, proc_args)
+        _exec_subprocess(sixs_bin.get_path(args.exec))
         return
 
     if args.path is not None: