Mercurial > hg > carton
annotate carton.py @ 35:122c56779f2b
add functionality to run post-install python scripts
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Mon, 08 Aug 2011 18:08:49 -0700 |
| parents | 8fef97a25925 |
| children | 77285bafc36a |
| rev | line source |
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| 0 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
| 29 | 4 make a self-extracting virtualenv from directories or URLs of packages |
| 5 | |
| 6 To package up all files in a virtualenvs source directory (e.g.):: | |
| 0 | 7 |
| 29 | 8 python path/to/carton.py myproject project/src/* |
| 9 | |
| 10 This will create a self-extracting file, `myproject.py`, that will unfold | |
| 11 a virtualenv with the specified packages setup for development | |
| 0 | 12 |
| 29 | 13 The sources may be directories, local or HTTP-accessible tarballs, or ordinary |
| 14 files. The `setup.py`s found in the `src` directory after extraction will be | |
| 15 run (via `python setup.py develop`) in the order they are provided. This makes | |
| 16 it possible to have completely local dependencies (without touching the net) | |
| 17 by correctly specifying the source order. If a `setup.py` is overwritten from | |
| 18 a later source, it will not be rerun (known limitation). | |
| 0 | 19 |
| 29 | 20 The extracted virtualenv will be created in the current directory and will have |
| 21 the same name as provided initially (e.g. `myproject`) unless `--env` is | |
| 22 specified. | |
| 23 | |
| 24 Normally, the entire contents of source directories are compressed and | |
| 25 packaged as-is. When running with the `--package` flag, a source tarball is | |
| 26 produced via `python setup.py sdist` if the directory contains a top-level | |
| 27 `setup.py`. | |
| 28 | |
| 29 Since directories are compressed as-is, portable file-based VCS repositories, | |
| 30 such a mercurial and git, may be cartoned this way (though note that newer | |
| 31 repositories may not be backwards-compatible with older clients). | |
| 0 | 32 """ |
| 33 | |
| 34 # imports | |
| 35 import os | |
| 36 import sys | |
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37 import subprocess |
| 0 | 38 import tarfile |
| 39 import tempfile | |
| 40 import urllib2 | |
| 41 from optparse import OptionParser | |
| 42 from StringIO import StringIO | |
| 43 | |
| 44 # global variables | |
| 45 usage = "%prog [options] environment_name directory|url [...]" | |
| 46 virtualenv_url = 'http://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.6.1.tar.gz' | |
| 47 template = """#!/usr/bin/env python | |
| 48 | |
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49 "create a virtualenv at %(ENV)s" |
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50 |
| 0 | 51 import os |
| 52 import shutil | |
| 53 import subprocess | |
| 54 import sys | |
| 55 import tarfile | |
| 56 import tempfile | |
| 57 from optparse import OptionParser | |
| 58 from StringIO import StringIO | |
| 59 | |
| 60 try: | |
| 61 call = subprocess.check_call | |
| 62 except AttributeError: | |
| 63 # old python; boo :( | |
| 64 call = subprocess.call | |
| 65 | |
| 66 # virtualenv name | |
| 67 ENV='''%(ENV)s''' | |
| 68 | |
| 69 # packed files | |
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70 VIRTUAL_ENV='''%(VIRTUAL_ENV)s'''.decode('base64').decode('zlib') |
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71 PACKAGE_SOURCES=%(PACKAGE_SOURCES)s |
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72 CARTON=%(CARTON)s |
| 0 | 73 |
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74 # post-install scripts |
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75 PYTHON_SCRIPTS=%(PYTHON_SCRIPTS)s |
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76 |
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77 # parse options |
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78 usage = os.path.basename(sys.argv[0]) + ' [options]' |
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79 parser = OptionParser(usage=usage, description=__doc__) |
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80 parser.add_option('--env', dest='env', help="environment name [DEFAULT: " + ENV + "]") |
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81 options, args = parser.parse_args() |
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82 if options.env: |
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83 ENV = options.env |
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84 |
| 0 | 85 # unpack virtualenv |
| 86 tempdir = tempfile.mkdtemp() | |
| 87 buffer = StringIO() | |
| 88 buffer.write(VIRTUAL_ENV) | |
| 89 buffer.seek(0) | |
| 90 tf = tarfile.open(mode='r', fileobj=buffer) | |
| 91 tf.extractall(tempdir) | |
| 92 | |
| 93 # find the virtualenv | |
| 94 for root, dirs, files in os.walk(tempdir): | |
| 95 if 'virtualenv.py' in files: | |
| 96 virtualenv = os.path.join(root, 'virtualenv.py') | |
| 97 break | |
| 98 else: | |
| 99 raise Exception("virtualenv.py not found in " + tempdir) | |
| 100 | |
| 101 # create the virtualenv | |
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102 os.environ.pop('PYTHONHOME', None) |
| 0 | 103 call([sys.executable, virtualenv, ENV]) |
| 104 | |
| 105 # find the bin/scripts directory | |
| 106 for i in ('bin', 'Scripts'): | |
| 107 scripts_dir = os.path.abspath(os.path.join(ENV, i)) | |
| 108 if os.path.exists(scripts_dir): | |
| 109 break | |
| 110 else: | |
| 111 raise Exception("Scripts directory not found in " + ENV) | |
| 112 | |
| 113 # find the virtualenv's python | |
| 114 for i in ('python', 'python.exe'): | |
| 115 python = os.path.join(scripts_dir, i) | |
| 116 if os.path.exists(python): | |
| 117 break | |
| 118 else: | |
| 119 raise Exception("python not found in " + scripts_dir) | |
| 120 | |
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121 # unpack the sources and setup for development |
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122 srcdir = os.path.join(ENV, 'src') |
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123 os.mkdir(srcdir) |
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124 setup_pys = set() |
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125 for source in PACKAGE_SOURCES: |
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126 source = source.decode('base64').decode('zlib') |
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127 buffer = StringIO() |
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128 buffer.write(source) |
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129 buffer.seek(0) |
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130 tf = tarfile.open(mode='r', fileobj=buffer) |
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131 tf.extractall(srcdir) |
| 0 | 132 |
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133 # setup sources for development if there are any new setup.py files |
| 16 | 134 # TODO: ideally this would figure out dependency order for you |
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135 for i in os.listdir(srcdir): |
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136 if i in setup_pys: |
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137 continue |
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138 subdir = os.path.join(srcdir, i) |
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139 if os.path.exists(os.path.join(srcdir, i, 'setup.py')): |
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140 call([python, 'setup.py', 'develop'], cwd=subdir) |
| 29 | 141 # TODO: try `setup.py install` if develop fails for distutils packages |
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142 setup_pys.add(i) |
| 0 | 143 |
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144 # add virtualenv to the virtualenv (!) |
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145 virtualenv_dir = os.path.dirname(virtualenv) |
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146 if os.path.exists(os.path.join(virtualenv_dir, 'setup.py')): |
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147 call([python, 'setup.py', 'install'], cwd=virtualenv_dir, stdout=subprocess.PIPE) |
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148 |
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149 # add carton to the virtualenv (!) |
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150 if CARTON: |
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151 CARTON = CARTON.decode('base64').decode('zlib') |
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152 carton_filename = os.path.join(scripts_dir, 'carton.py') |
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153 f = file(carton_filename, 'w') |
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154 f.write(CARTON) |
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155 f.close() |
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156 try: |
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157 os.chmod(carton_filename, 0755) |
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158 except: |
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159 # you probably don't have os.chmod |
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160 pass |
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161 |
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162 # cleanup virtualenv tempdir |
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163 shutil.rmtree(tempdir) |
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164 |
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165 # run post-install scripts |
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166 for script in PYTHON_SCRIPTS: |
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167 if not os.path.isabs(script): |
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168 script = os.path.join(os.path.abspath(ENV), script) |
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169 call([python, script]) |
| 0 | 170 """ |
| 171 | |
| 172 def isURL(path): | |
| 173 return path.startswith('http://') or path.startswith('https://') | |
| 174 | |
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175 try: |
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176 call = subprocess.check_call |
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177 except AttributeError: |
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178 # old python; boo :( |
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179 call = subprocess.call |
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180 |
| 0 | 181 def main(args=sys.argv[1:]): |
| 182 | |
| 183 # parse CLI arguments | |
| 184 parser = OptionParser(usage=usage, description=__doc__) | |
| 185 parser.add_option('-o', dest='outfile', | |
| 186 help="specify outfile; otherwise it will come from environment_name") | |
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187 parser.add_option('-p', '--package', dest='package', |
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188 action='store_true', default=False, |
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189 help="create python packages from sources; do not take entire subdirectory") |
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190 parser.add_option('--python-script', dest='python_scripts', default=[], |
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191 action='append', |
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192 help="post-uncartoning python scripts to run in the virtualenv; these should be relative to $VIRTUAL_ENV") |
| 0 | 193 parser.add_option('--virtualenv', dest='virtualenv', |
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194 help="use this virtualenv URL or file tarball") |
| 0 | 195 options, args = parser.parse_args(args) |
| 196 if len(args) < 2: | |
| 197 parser.print_usage() | |
| 198 parser.exit() | |
| 199 environment = args[0] | |
| 200 if environment.endswith('.py'): | |
| 201 # stop on .py; will add it in later | |
| 202 environment = environment[:-3] | |
| 203 sources = args[1:] | |
| 204 | |
| 205 # tar up the sources | |
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206 source_array = [] |
| 0 | 207 for source in sources: |
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208 buffer = None |
| 0 | 209 |
| 210 if isURL(source): | |
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211 # remote tarball or resource |
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212 buffer = urllib2.urlopen(source).read() |
| 0 | 213 else: |
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214 # local directory or tarball |
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215 assert os.path.exists(source), "%s does not exist" % source |
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216 |
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217 # package up the source if applicable |
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218 if options.package and os.path.exists(os.path.join(source, 'setup.py')): |
| 24 | 219 |
| 220 # create a .tar.gz package | |
| 221 call([sys.executable, 'setup.py', 'sdist'], cwd=source, stdout=subprocess.PIPE) | |
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222 dist_dir = os.path.join(source, 'dist') |
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223 assert os.path.isdir(dist_dir), "dist directory not created in %s" % source |
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224 tarfiles = [i for i in os.listdir(dist_dir) |
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225 if i.endswith('.tar.gz')] |
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226 assert tarfiles, "no .tar.gz files found in %s" % dist_dir |
| 24 | 227 |
| 228 # use the last modified tarball | |
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229 def last_modified(filename): |
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230 return os.path.getmtime(os.path.join(dist_dir, filename)) |
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231 tarfiles.sort(key=last_modified) |
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232 source = os.path.join(dist_dir, tarfiles[-1]) |
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233 |
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234 if (not os.path.isdir(source)) and tarfile.is_tarfile(source): |
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235 # check for a tarball |
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236 buffer = file(source).read() |
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237 else: |
| 24 | 238 # add other sources (files and directories) to the archive |
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239 source_buffer = StringIO() |
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240 source_tar = tarfile.open(mode="w:gz", fileobj=source_buffer) |
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241 source_tar.add(source, arcname=os.path.basename(source.rstrip(os.path.sep))) |
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242 source_tar.close() |
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243 buffer = source_buffer.getvalue() |
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244 |
| 0 | 245 # could use git, hg, etc repos. but probably shouldn't |
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246 |
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247 source_array.append(buffer.encode('zlib').encode('base64')) |
| 0 | 248 |
| 249 # tar up virtualenv if not available | |
| 250 if options.virtualenv: | |
| 251 if isURL(options.virtualenv): | |
| 252 globals()['VIRTUAL_ENV'] = urllib2.urlopen(options.virtualenv).read() | |
| 253 else: | |
| 254 assert os.path.exists(options.virtualenv) | |
| 255 if os.path.isdir(options.virtualenv): | |
| 256 raise NotImplementedError("Hypothetically you should be able to use a local directory or tarball, but I haven't done this yet") | |
| 257 else: | |
| 258 # assert a tarfile | |
| 259 assert tarfile.is_tarfile(options.virtualenv), "%s must be a tar file" % options.virtualenv | |
| 260 globals()['VIRTUAL_ENV'] = file(options.virtualenv).read() | |
| 261 else: | |
| 262 globals()['VIRTUAL_ENV'] = urllib2.urlopen(virtualenv_url).read() | |
| 263 # TODO: used the below hashed value of VIRTUAL_ENV if set | |
| 264 # (set that with another file) | |
| 265 | |
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266 # get the contents of this file |
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267 carton = None |
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268 try: |
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269 if __file__: |
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270 filename = __file__.rstrip('c') # avoid pyfiles |
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271 if os.path.exists(filename): |
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272 carton = file(filename).read().encode('zlib').encode('base64') |
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273 except NameError: |
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274 pass |
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275 |
| 0 | 276 # interpolate "template" -> output |
| 30 | 277 # TODO: add the ability to include a post-deployment script |
| 0 | 278 outfile = options.outfile |
| 279 if outfile is None: | |
| 280 outfile = environment + '.py' | |
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281 variables = {'VIRTUAL_ENV': VIRTUAL_ENV.encode('zlib').encode('base64'), |
| 0 | 282 'ENV': environment, |
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283 'CARTON': repr(carton), |
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284 'PYTHON_SCRIPTS': repr(options.python_scripts), |
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285 'PACKAGE_SOURCES': repr(source_array)} |
| 0 | 286 f = file(outfile, 'w') |
| 287 f.write(template % variables) | |
| 288 f.close() | |
| 289 try: | |
| 290 os.chmod(outfile, 0755) | |
| 291 except: | |
| 292 # you probably don't have os.chmod | |
| 293 pass | |
| 294 | |
| 295 VIRTUAL_ENV = """""" | |
| 296 | |
| 297 if __name__ == '__main__': | |
| 298 main() |