Put dependency checking into a separate file
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215
checkdeps.py
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215
checkdeps.py
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"""Check dependendies and give recommendations about how to satisfy them"""
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from distutils.errors import CompileError
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try:
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from setuptools.dist import Distribution
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from setuptools.extension import Extension
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from setuptools.command.build_ext import build_ext
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HAVE_SETUPTOOLS = True
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except ImportError:
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HAVE_SETUPTOOLS = False
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from importlib import import_module
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import os
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import sys
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PACKAGE_MANAGER = {
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"OpenBSD": "pkg_add",
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"FreeBSD": "pkg install",
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"Debian": "apt-get install",
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"Ubuntu": "apt-get install",
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"Ubuntu 12": "apt-get install",
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"openSUSE": "zypper install",
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"Fedora": "dnf install",
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"Guix": "guix package -i",
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"Gentoo": "emerge"
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}
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PACKAGES = {
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"PyQt4": {
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"OpenBSD": "py-qt4",
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"FreeBSD": "py27-qt4",
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"Debian": "python-qt4",
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"Ubuntu": "python-qt4",
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"Ubuntu 12": "python-qt4",
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"openSUSE": "python-qt",
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"Fedora": "PyQt4",
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"Guix": "python2-pyqt@4.11.4",
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"Gentoo": "dev-python/PyQt4",
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'optional': True,
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'description': "You only need PyQt if you want to use the GUI. " \
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"When only running as a daemon, this can be skipped.\n" \
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"However, you would have to install it manually " \
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"because setuptools does not support PyQt."
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},
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"msgpack": {
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"OpenBSD": "py-msgpack",
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"FreeBSD": "py27-msgpack-python",
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"Debian": "python-msgpack",
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"Ubuntu": "python-msgpack",
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"Ubuntu 12": "msgpack-python",
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"openSUSE": "python-msgpack-python",
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"Fedora": "python2-msgpack",
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"Guix": "python2-msgpack",
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"Gentoo": "dev-python/msgpack",
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"optional": True,
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"description": "python-msgpack is recommended for improved performance of message encoding/decoding"
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},
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"pyopencl": {
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"FreeBSD": "py27-pyopencl",
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"Debian": "python-pyopencl",
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"Ubuntu": "python-pyopencl",
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"Ubuntu 12": "python-pyopencl",
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"Fedora": "python2-pyopencl",
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"openSUSE": "",
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"OpenBSD": "",
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"Guix": "",
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"Gentoo": "dev-python/pyopencl",
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"optional": True,
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'description': "If you install pyopencl, you will be able to use " \
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"GPU acceleration for proof of work. \n" \
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"You also need a compatible GPU and drivers."
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},
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"setuptools": {
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"OpenBSD": "py-setuptools",
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"FreeBSD": "py27-setuptools",
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"Debian": "python-setuptools",
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"Ubuntu": "python-setuptools",
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"Ubuntu 12": "python-setuptools",
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"Fedora": "python2-setuptools",
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"openSUSE": "python-setuptools",
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"Guix": "python2-setuptools",
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"Gentoo": "",
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"optional": False,
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}
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}
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COMPILING = {
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"Debian": "build-essential libssl-dev",
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"Ubuntu": "build-essential libssl-dev",
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"Fedora": "gcc-c++ redhat-rpm-config python-devel openssl-devel",
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"openSUSE": "gcc-c++ libopenssl-devel python-devel",
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"optional": False,
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}
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def detectOSRelease():
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with open("/etc/os-release", 'r') as osRelease:
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version = None
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for line in osRelease:
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if line.startswith("NAME="):
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line = line.lower()
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if "fedora" in line:
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detectOS.result = "Fedora"
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elif "opensuse" in line:
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detectOS.result = "openSUSE"
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elif "ubuntu" in line:
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detectOS.result = "Ubuntu"
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elif "debian" in line:
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detectOS.result = "Debian"
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elif "gentoo" in line or "calculate" in line:
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detectOS.result = "Gentoo"
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else:
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detectOS.result = None
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if line.startswith("VERSION_ID="):
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try:
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version = float(line.split("\"")[1])
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except ValueError:
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pass
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if detectOS.result == "Ubuntu" and version < 14:
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detectOS.result = "Ubuntu 12"
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def detectOS():
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if detectOS.result is not None:
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return detectOS.result
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if sys.platform.startswith('openbsd'):
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detectOS.result = "OpenBSD"
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elif sys.platform.startswith('freebsd'):
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detectOS.result = "FreeBSD"
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elif sys.platform.startswith('win'):
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detectOS.result = "Windows"
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elif os.path.isfile("/etc/os-release"):
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detectOSRelease()
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elif os.path.isfile("/etc/config.scm"):
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detectOS.result = "Guix"
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return detectOS.result
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def detectPrereqs(missing=True):
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available = []
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for module in PACKAGES:
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try:
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import_module(module)
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if not missing:
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available.append(module)
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except ImportError:
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if missing:
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available.append(module)
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return available
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def prereqToPackages():
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if not detectPrereqs():
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return
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print "%s %s" % (
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PACKAGE_MANAGER[detectOS()], " ".join(
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PACKAGES[x][detectOS()] for x in detectPrereqs()))
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def compilerToPackages():
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if not detectOS() in COMPILING:
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return
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print "%s %s" % (
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PACKAGE_MANAGER[detectOS.result], COMPILING[detectOS.result])
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def testCompiler():
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if not HAVE_SETUPTOOLS:
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# silent, we can't test without setuptools
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return True
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bitmsghash = Extension(
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'bitmsghash',
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sources=['src/bitmsghash/bitmsghash.cpp'],
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libraries=['pthread', 'crypto'],
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)
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dist = Distribution()
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dist.ext_modules = [bitmsghash]
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cmd = build_ext(dist)
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cmd.initialize_options()
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cmd.finalize_options()
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cmd.force = True
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try:
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cmd.run()
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except CompileError:
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return False
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else:
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fullPath = os.path.join(cmd.build_lib, cmd.get_ext_filename("bitmsghash"))
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return os.path.isfile(fullPath)
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detectOS.result = None
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prereqs = detectPrereqs()
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compiler = testCompiler()
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if (not compiler or prereqs) and detectOS() in PACKAGE_MANAGER:
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print "It looks like you're using %s. " \
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"It is highly recommended to use the package manager\n" \
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"to install the missing dependencies." % (detectOS.result)
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if not compiler:
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print "Building the bitmsghash module failed.\n" \
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"You may be missing a C++ compiler and/or the OpenSSL headers."
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if prereqs:
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mandatory = list(x for x in prereqs if "optional" not in PACKAGES[x] or not PACKAGES[x]["optional"])
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optional = list(x for x in prereqs if "optional" in PACKAGES[x] and PACKAGES[x]["optional"])
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if mandatory:
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print "Missing mandatory dependencies: %s" % (" ".join(mandatory))
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if optional:
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print "Missing optional dependencies: %s" % (" ".join(optional))
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for package in optional:
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print PACKAGES[package].get('description')
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if (not compiler or prereqs) and detectOS() in PACKAGE_MANAGER:
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print "You can install the missing dependencies by running, as root:"
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if not compiler:
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compilerToPackages()
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prereqToPackages()
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else:
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print "All the dependencies satisfied, you can install PyBitmessage"
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