decouple

Author: davidlatwe

package.py

@@ -0,0 +1,63 @@
+
+early = globals()["early"]
+
+
+name = "python"
+
+authors = ["Guido van Rossum"]
+
+description = "The Python programming language.(Ship via Miniconda)"
+
+
+@early()
+def version():
+    """Define Python version from command line option
+    """
+    import sys
+    import argparse
+
+    if any(help_ in sys.argv[1:] for help_ in ["-h", "--help"]):
+        # Skip parsing version string if user is asking for help,
+        # or the following parser will print out it's own help
+        # message without rez-build's.
+        return ""
+
+    parser = argparse.ArgumentParser()
+
+    with open("./parse_build_args.py", "r") as add_args:
+        exec(add_args.read(), {"parser": parser})
+
+    args, unknown = parser.parse_known_args()  # parse `sys.argv`
+    python_version = args.version
+
+    return python_version
+
+
+variants = [
+    ["platform-*"],
+]
+
+
+build_requires = [
+    "miniconda",
+]
+
+
+build_command = "python {root}/rezbuild.py {install}"
+
+
+def commands():
+    env = globals()["env"]
+    this = globals()["this"]
+    system = globals()["system"]
+    building = globals()["building"]
+
+    if system.platform == "windows":
+        env.PATH.prepend("{root}/payload/Library/bin")
+        env.PATH.prepend("{root}/payload/Scripts")
+        env.PATH.prepend("{root}/payload")
+    else:
+        env.PATH.prepend("{root}/payload/bin")
+
+
+uuid = "repository.python"

parse_build_args.py

@@ -0,0 +1,6 @@
+
+# `parser` var will be given by custom build system
+parser.add_argument("--version",
+                    required=True,
+                    type=str,
+                    help="Set Python version to build.")

rezbuild.py

@@ -0,0 +1,76 @@
+
+import os
+import sys
+import shutil
+import subprocess
+
+
+def logger():
+    import logging
+
+    package_name = os.environ["REZ_BUILD_PROJECT_NAME"]
+    log_name = package_name + ".build"
+
+    # (TODO) Add formatter
+
+    log_handler = logging.StreamHandler()
+    log = logging.getLogger(log_name)
+    log.addHandler(log_handler)
+    log.setLevel(logging.INFO)
+
+    return log
+
+
+def build(source_path, build_path, install_path, targets=None):
+    log = logger()
+    targets = targets or []
+
+    if "install" in targets:
+        dst = install_path + "/payload"
+    else:
+        dst = build_path + "/payload"
+
+    dst = os.path.normpath(dst)
+
+    if os.path.isdir(dst):
+        shutil.rmtree(dst)
+    os.makedirs(dst)
+
+    # Create with `--prefix`
+    python_version = os.environ["REZ_BUILD_PROJECT_VERSION"]
+    subprocess.check_output(["conda",
+                             "create",
+                             "--prefix",
+                             dst,
+                             "python=%s" % python_version,
+                             "--yes"])
+
+    # Unregister env location from `~/.conda/environment.txt`
+    #   see `../miniconda3/..Lib../site-packages/conda/core/envs_manager.py`
+    #   for conda environment registering implementation detail.
+    #
+    home = os.path.expanduser("~")
+    registry = os.path.join(home, ".conda", "environments.txt")
+
+    if not os.path.isfile(registry):
+        log.warning("Conda environment.txt not found: %s\n"
+                    "Skip location unregistering." % registry)
+        return
+
+    # make sure that we are excluding the right location
+    locations = []
+    with open(registry, "r") as f:
+        for loc in f.readlines():
+            if dst != os.path.normpath(loc).strip():
+                locations.append(loc)
+
+    # re-write without the location we just created
+    with open(registry, "w") as f:
+        f.writelines(locations)
+
+
+if __name__ == "__main__":
+    build(source_path=os.environ["REZ_BUILD_SOURCE_PATH"],
+          build_path=os.environ["REZ_BUILD_PATH"],
+          install_path=os.environ["REZ_BUILD_INSTALL_PATH"],
+          targets=sys.argv[1:])