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slapos.buildout
Commit d70911ad authored by jim's avatar jim
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Added basic low-level support for a download cache. 

This led to a pretty major refactoring.


git-svn-id: http://svn.zope.org/repos/main/zc.buildout/trunk@73327 62d5b8a3-27da-0310-9561-8e5933582275
parent a0b9afd5
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Showing with 415 additions and 174 deletions
src/zc/buildout/easy_install.py
View file @ d70911ad
...@@ -104,9 +104,11 @@ _easy_install_cmd = _safe_arg( ...@@ -104,9 +104,11 @@ _easy_install_cmd = _safe_arg(
'from setuptools.command.easy_install import main; main()' 'from setuptools.command.easy_install import main; main()'
) )
class Installer: class Installer:
_versions = {} _versions = {}
_download_cache = None
def __init__(self, def __init__(self,
dest=None, dest=None,
...@@ -119,7 +121,10 @@ class Installer: ...@@ -119,7 +121,10 @@ class Installer:
versions=None, versions=None,
): ):
self._dest = dest self._dest = dest
self._links = list(links) self._links = links = list(links)
if self._download_cache and (self._download_cache not in links):
links.insert(0, self._download_cache)
self._index_url = index self._index_url = index
self._executable = executable self._executable = executable
self._always_unzip = always_unzip self._always_unzip = always_unzip
...@@ -127,6 +132,8 @@ class Installer: ...@@ -127,6 +132,8 @@ class Installer:
if dest is not None and dest not in path: if dest is not None and dest not in path:
path.insert(0, dest) path.insert(0, dest)
self._path = path self._path = path
if self._dest is None:
newest = False
self._newest = newest self._newest = newest
self._env = pkg_resources.Environment(path, self._env = pkg_resources.Environment(path,
python=_get_version(executable)) python=_get_version(executable))
...@@ -135,12 +142,12 @@ class Installer: ...@@ -135,12 +142,12 @@ class Installer:
if versions is not None: if versions is not None:
self._versions = versions self._versions = versions
def _satisfied(self, req): def _satisfied(self, req, source=None):
dists = [dist for dist in self._env[req.project_name] if dist in req] dists = [dist for dist in self._env[req.project_name] if dist in req]
if not dists: if not dists:
logger.debug('We have no distributions for %s that satisfies %s.', logger.debug('We have no distributions for %s that satisfies %s.',
req.project_name, req) req.project_name, req)
return None return None, self._obtain(req, source)
# Note that dists are sorted from best to worst, as promised by # Note that dists are sorted from best to worst, as promised by
# env.__getitem__ # env.__getitem__
...@@ -148,13 +155,13 @@ class Installer: ...@@ -148,13 +155,13 @@ class Installer:
for dist in dists: for dist in dists:
if (dist.precedence == pkg_resources.DEVELOP_DIST): if (dist.precedence == pkg_resources.DEVELOP_DIST):
logger.debug('We have a develop egg for %s', req) logger.debug('We have a develop egg for %s', req)
return dist return dist, None
if not self._newest: if not self._newest:
# We don't need the newest, so we'll use the newest one we # We don't need the newest, so we'll use the newest one we
# find, which is the first returned by # find, which is the first returned by
# Environment.__getitem__. # Environment.__getitem__.
return dists[0] return dists[0], None
# Find an upper limit in the specs, if there is one: # Find an upper limit in the specs, if there is one:
specs = [(pkg_resources.parse_version(v), op) for (op, v) in req.specs] specs = [(pkg_resources.parse_version(v), op) for (op, v) in req.specs]
...@@ -189,7 +196,7 @@ class Installer: ...@@ -189,7 +196,7 @@ class Installer:
if maxv is not None and best_we_have.version == maxv: if maxv is not None and best_we_have.version == maxv:
logger.debug('We have the best distribution that satisfies\n%s', logger.debug('We have the best distribution that satisfies\n%s',
req) req)
return best_we_have return best_we_have, None
# We have some installed distros. There might, theoretically, be # We have some installed distros. There might, theoretically, be
# newer ones. Let's find out which ones are available and see if # newer ones. Let's find out which ones are available and see if
...@@ -198,7 +205,7 @@ class Installer: ...@@ -198,7 +205,7 @@ class Installer:
if self._dest is not None: if self._dest is not None:
best_available = self._index.obtain(req) best_available = self._obtain(req, source)
else: else:
best_available = None best_available = None
...@@ -208,7 +215,7 @@ class Installer: ...@@ -208,7 +215,7 @@ class Installer:
logger.debug( logger.debug(
'There are no distros available that meet %s. Using our best.', 'There are no distros available that meet %s. Using our best.',
req) req)
return best_we_have return best_we_have, None
else: else:
# Let's find out if we already have the best available: # Let's find out if we already have the best available:
if best_we_have.parsed_version >= best_available.parsed_version: if best_we_have.parsed_version >= best_available.parsed_version:
...@@ -216,16 +223,27 @@ class Installer: ...@@ -216,16 +223,27 @@ class Installer:
logger.debug( logger.debug(
'We have the best distribution that satisfies\n%s', 'We have the best distribution that satisfies\n%s',
req) req)
return best_we_have return best_we_have, None
return None return None, best_available
def _call_easy_install(self, spec, ws, dest): def _load_dist(self, dist):
dists = pkg_resources.Environment(
dist.location,
python=_get_version(self._executable),
)[dist.project_name]
assert len(dists) == 1
return dists[0]
def _call_easy_install(self, spec, ws, dest, dist):
path = self._get_dist(pkg_resources.Requirement.parse('setuptools'), tmp = tempfile.mkdtemp(dir=dest)
ws, False).location try:
path = self._get_dist(
pkg_resources.Requirement.parse('setuptools'), ws, False,
)[0].location
args = ('-c', _easy_install_cmd, '-mUNxd', _safe_arg(dest)) args = ('-c', _easy_install_cmd, '-mUNxd', _safe_arg(tmp))
if self._always_unzip: if self._always_unzip:
args += ('-Z', ) args += ('-Z', )
level = logger.getEffectiveLevel() level = logger.getEffectiveLevel()
...@@ -242,10 +260,105 @@ class Installer: ...@@ -242,10 +260,105 @@ class Installer:
args += (dict(os.environ, PYTHONPATH=path), ) args += (dict(os.environ, PYTHONPATH=path), )
sys.stdout.flush() # We want any pending output first sys.stdout.flush() # We want any pending output first
exit_code = os.spawnle(os.P_WAIT, self._executable, self._executable, exit_code = os.spawnle(
os.P_WAIT, self._executable, self._executable,
*args) *args)
assert exit_code == 0
dists = []
env = pkg_resources.Environment(
[tmp],
python=_get_version(self._executable),
)
for project in env:
dists.extend(env[project])
if exit_code:
logger.error(
"An error occured when trying to install %s."
"Look above this message for any errors that"
"were output by easy_install.",
dist)
if not dists:
raise zc.buildout.UserError("Couldn't install: %s" % dist)
if len(dists) > 1:
logger.warn("Installing %s\n"
"caused multiple distributions to be installed:\n"
"%s\n",
dist, '\n'.join(map(str, dists)))
else:
d = dists[0]
if d.project_name != dist.project_name:
logger.warn("Installing %s\n"
"Caused installation of a distribution:\n"
"%s\n"
"with a different project name.",
dist, d)
if d.version != dist.version:
logger.warn("Installing %s\n"
"Caused installation of a distribution:\n"
"%s\n"
"with a different version.",
dist, d)
result = []
for d in dists:
newloc = os.path.join(dest, os.path.basename(d.location))
if os.path.exists(newloc):
if os.path.is_dir(newloc):
shutil.rmtree(newloc)
else:
os.remove(newloc)
os.rename(d.location, newloc)
[d] = pkg_resources.Environment(
[newloc],
python=_get_version(self._executable),
)[d.project_name]
result.append(d)
return result
finally:
shutil.rmtree(tmp)
def _obtain(self, requirement, source=None):
index = self._index
if index.obtain(requirement) is None:
return None
best = []
bestv = ()
for dist in index[requirement.project_name]:
if dist not in requirement:
continue
if source and dist.precedence != pkg_resources.SOURCE_DIST:
continue
distv = dist.parsed_version
if distv > bestv:
best = [dist]
bestv = distv
elif distv == bestv:
best.append(dist)
if not best:
return None
if len(best) == 1:
return best[0]
if self._download_cache:
for dist in best:
if os.path.dirname(dist.location) == self._download_cache:
return dist
best.sort()
return best[-1]
def _fetch(self, dist, tmp):
return dist.clone(location=self._index.download(dist.location, tmp))
def _get_dist(self, requirement, ws, always_unzip): def _get_dist(self, requirement, ws, always_unzip):
...@@ -253,40 +366,46 @@ class Installer: ...@@ -253,40 +366,46 @@ class Installer:
# Maybe an existing dist is already the best dist that satisfies the # Maybe an existing dist is already the best dist that satisfies the
# requirement # requirement
dist = self._satisfied(requirement) dist, avail = self._satisfied(requirement)
if dist is None: if dist is None:
if self._dest is not None: if self._dest is not None:
logger.info("Getting new distribution for %s", requirement) logger.info("Getting new distribution for %s", requirement)
# Retrieve the dist:grokonepage # Retrieve the dist:
index = self._index if avail is None:
dist = index.obtain(requirement)
if dist is None:
raise zc.buildout.UserError( raise zc.buildout.UserError(
"Couldn't find a distribution for %s." "Couldn't find a distribution for %s."
% requirement) % requirement)
fname = dist.location # We may overwrite distributions, so clear importer
if url_match(fname): # cache.
fname = urlparse.urlparse(fname)[2] sys.path_importer_cache.clear()
if fname.endswith('.egg'): tmp = self._download_cache
# It's already an egg, just fetch it into the dest
tmp = tempfile.mkdtemp('get_dist')
try: try:
dist = index.fetch_distribution(requirement, tmp) if tmp:
if os.path.dirname(avail.location) == tmp:
dist = avail
else:
dist = self._fetch(avail, tmp)
else:
tmp = tempfile.mkdtemp('get_dist')
dist = self._fetch(avail, tmp)
if dist is None: if dist is None:
raise zc.buildout.UserError( raise zc.buildout.UserError(
"Couln't download a distribution for %s." "Couln't download distribution %s." % avail)
% requirement)
if dist.precedence == pkg_resources.EGG_DIST:
# It's already an egg, just fetch it into the dest
newloc = os.path.join( newloc = os.path.join(
self._dest, os.path.basename(dist.location)) self._dest, os.path.basename(dist.location))
if os.path.isdir(dist.location): if os.path.isdir(dist.location):
# we got a directory. It must have been # we got a directory. It must have been
# obtained locally. Jut copy it. # obtained locally. Just copy it.
shutil.copytree(dist.location, newloc) shutil.copytree(dist.location, newloc)
else: else:
...@@ -298,7 +417,8 @@ class Installer: ...@@ -298,7 +417,8 @@ class Installer:
) )
should_unzip = ( should_unzip = (
metadata.has_metadata('not-zip-safe') metadata.has_metadata('not-zip-safe')
or not metadata.has_metadata('zip-safe') or
not metadata.has_metadata('zip-safe')
) )
if should_unzip: if should_unzip:
...@@ -307,57 +427,53 @@ class Installer: ...@@ -307,57 +427,53 @@ class Installer:
else: else:
shutil.copyfile(dist.location, newloc) shutil.copyfile(dist.location, newloc)
finally: # Getting the dist from the environment causes the
shutil.rmtree(tmp) # distribution meta data to be read. Cloning isn't
# good enough.
dists = pkg_resources.Environment(
[newloc],
python=_get_version(self._executable),
)[dist.project_name]
else: else:
# It's some other kind of dist. We'll download it to # It's some other kind of dist. We'll let easy_install
# a temporary directory and let easy_install have it's # deal with it:
# way with it: dists = self._call_easy_install(
tmp = tempfile.mkdtemp('get_dist') dist.location, ws, self._dest, dist)
try:
dist = index.fetch_distribution(requirement, tmp)
# May need a new one. Call easy_install
self._call_easy_install(dist.location, ws, self._dest)
finally: finally:
if tmp != self._download_cache:
shutil.rmtree(tmp) shutil.rmtree(tmp)
# Because we have added a new egg, we need to rescan
# the destination directory.
# We may overwrite distributions, so clear importer
# cache.
sys.path_importer_cache.clear()
self._env.scan([self._dest]) self._env.scan([self._dest])
dist = self._env.best_match(requirement, ws) dist = self._env.best_match(requirement, ws)
logger.info("Got %s", dist) logger.info("Got %s", dist)
else:
dist = self._env.best_match(requirement, ws)
if dist is None: else:
raise ValueError("Couldn't find", requirement) dists = [dist]
# XXX Need test for this # XXX Need test for this
for dist in dists:
if dist.has_metadata('dependency_links.txt'): if dist.has_metadata('dependency_links.txt'):
for link in dist.get_metadata_lines('dependency_links.txt'): for link in dist.get_metadata_lines('dependency_links.txt'):
link = link.strip() link = link.strip()
if link not in self._links: if link not in self._links:
logger.debug('Adding find link %r from %s', link, dist)
self._links.append(link) self._links.append(link)
self._index = _get_index(self._executable, self._index = _get_index(self._executable,
self._index_url, self._links) self._index_url, self._links)
for dist in dists:
# Check whether we picked a version and, if we did, report it: # Check whether we picked a version and, if we did, report it:
if not ( if not (
dist.precedence == pkg_resources.DEVELOP_DIST dist.precedence == pkg_resources.DEVELOP_DIST
or or
(len(requirement.specs) == 1 and requirement.specs[0][0] == '==') (len(requirement.specs) == 1
and
requirement.specs[0][0] == '==')
): ):
picked.debug('%s = %s', dist.project_name, dist.version) picked.debug('%s = %s', dist.project_name, dist.version)
return dist return dists
def _maybe_add_setuptools(self, ws, dist): def _maybe_add_setuptools(self, ws, dist):
if dist.has_metadata('namespace_packages.txt'): if dist.has_metadata('namespace_packages.txt'):
...@@ -376,7 +492,7 @@ class Installer: ...@@ -376,7 +492,7 @@ class Installer:
pkg_resources.Requirement.parse('setuptools') pkg_resources.Requirement.parse('setuptools')
) )
if ws.find(requirement) is None: if ws.find(requirement) is None:
dist = self._get_dist(requirement, ws, False) for dist in self._get_dist(requirement, ws, False):
ws.add(dist) ws.add(dist)
...@@ -413,7 +529,7 @@ class Installer: ...@@ -413,7 +529,7 @@ class Installer:
ws = working_set ws = working_set
for requirement in requirements: for requirement in requirements:
dist = self._get_dist(requirement, ws, self._always_unzip) for dist in self._get_dist(requirement, ws, self._always_unzip):
ws.add(dist) ws.add(dist)
self._maybe_add_setuptools(ws, dist) self._maybe_add_setuptools(ws, dist)
...@@ -433,7 +549,8 @@ class Installer: ...@@ -433,7 +549,8 @@ class Installer:
requirement = self._constrain(requirement) requirement = self._constrain(requirement)
if dest: if dest:
logger.debug('Getting required %s', requirement) logger.debug('Getting required %s', requirement)
dist = self._get_dist(requirement, ws, self._always_unzip) for dist in self._get_dist(requirement, ws, self._always_unzip
):
ws.add(dist) ws.add(dist)
self._maybe_add_setuptools(ws, dist) self._maybe_add_setuptools(ws, dist)
else: else:
...@@ -442,33 +559,41 @@ class Installer: ...@@ -442,33 +559,41 @@ class Installer:
return ws return ws
def build(self, spec, build_ext): def build(self, spec, build_ext):
logger.debug('Building %r', spec)
requirement = self._constrain(pkg_resources.Requirement.parse(spec)) requirement = self._constrain(pkg_resources.Requirement.parse(spec))
dist = self._satisfied(requirement) dist, avail = self._satisfied(requirement, 1)
if dist is not None: if dist is not None:
return dist.location return [dist.location]
undo = []
try:
tmp = tempfile.mkdtemp('build')
undo.append(lambda : shutil.rmtree(tmp))
tmp2 = tempfile.mkdtemp('build')
undo.append(lambda : shutil.rmtree(tmp2))
dist = self._index.fetch_distribution( # Retrieve the dist:
requirement, tmp2, False, True) if avail is None:
if dist is None:
raise zc.buildout.UserError( raise zc.buildout.UserError(
"Couldn't find a source distribution for %s." "Couldn't find a source distribution for %s."
% requirement) % requirement)
setuptools.archive_util.unpack_archive(dist.location, tmp)
if os.path.exists(os.path.join(tmp, 'setup.py')): logger.debug('Building %r', spec)
base = tmp
tmp = self._download_cache
try:
if tmp:
if os.path.dirname(avail.location) == tmp:
dist = avail
else:
dist = self._fetch(avail, tmp)
else: else:
setups = glob.glob(os.path.join(tmp, '*', 'setup.py')) tmp = tempfile.mkdtemp('get_dist')
dist = self._fetch(avail, tmp)
build_tmp = tempfile.mkdtemp('build')
try:
setuptools.archive_util.unpack_archive(dist.location,
build_tmp)
if os.path.exists(os.path.join(build_tmp, 'setup.py')):
base = build_tmp
else:
setups = glob.glob(
os.path.join(build_tmp, '*', 'setup.py'))
if not setups: if not setups:
raise distutils.errors.DistutilsError( raise distutils.errors.DistutilsError(
"Couldn't find a setup script in %s" "Couldn't find a setup script in %s"
...@@ -481,7 +606,6 @@ class Installer: ...@@ -481,7 +606,6 @@ class Installer:
) )
base = os.path.dirname(setups[0]) base = os.path.dirname(setups[0])
setup_cfg = os.path.join(base, 'setup.cfg') setup_cfg = os.path.join(base, 'setup.cfg')
if not os.path.exists(setup_cfg): if not os.path.exists(setup_cfg):
f = open(setup_cfg, 'w') f = open(setup_cfg, 'w')
...@@ -489,16 +613,18 @@ class Installer: ...@@ -489,16 +613,18 @@ class Installer:
setuptools.command.setopt.edit_config( setuptools.command.setopt.edit_config(
setup_cfg, dict(build_ext=build_ext)) setup_cfg, dict(build_ext=build_ext))
tmp3 = tempfile.mkdtemp('build', dir=self._dest) dists = self._call_easy_install(
undo.append(lambda : shutil.rmtree(tmp3)) base, pkg_resources.WorkingSet(),
self._dest, dist)
self._call_easy_install(base, pkg_resources.WorkingSet(), tmp3)
return _copyeggs(tmp3, self._dest, '.egg', undo) return [dist.location for dist in dists]
finally:
shutil.rmtree(build_tmp)
finally: finally:
undo.reverse() if tmp != self._download_cache:
[f() for f in undo] shutil.rmtree(tmp)
def default_versions(versions=None): def default_versions(versions=None):
old = Installer._versions old = Installer._versions
...@@ -506,6 +632,12 @@ def default_versions(versions=None): ...@@ -506,6 +632,12 @@ def default_versions(versions=None):
Installer._versions = versions Installer._versions = versions
return old return old
def download_cache(path=-1):
old = Installer._download_cache
if path != -1:
Installer._download_cache = path
return old
def install(specs, dest, def install(specs, dest,
links=(), index=None, links=(), index=None,
executable=sys.executable, always_unzip=False, executable=sys.executable, always_unzip=False,
......
src/zc/buildout/easy_install.txt
View file @ d70911ad
...@@ -645,7 +645,7 @@ extension, extdemo.c:: ...@@ -645,7 +645,7 @@ extension, extdemo.c::
#endif #endif
} }
The extension depends on a system-dependnt include file, extdemo.h, The extension depends on a system-dependent include file, extdemo.h,
that defines a constant, EXTDEMO, that is exposed by the extension. that defines a constant, EXTDEMO, that is exposed by the extension.
We'll add an include directory to our sample buildout and add the We'll add an include directory to our sample buildout and add the
...@@ -664,7 +664,7 @@ distribution: ...@@ -664,7 +664,7 @@ distribution:
... 'extdemo', dest, ... 'extdemo', dest,
... {'include-dirs': os.path.join(sample_buildout, 'include')}, ... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/') ... links=[link_server], index=link_server+'index/')
'/sample-install/extdemo-1.4-py2.4-unix-i686.egg' ['/sample-install/extdemo-1.4-py2.4-unix-i686.egg']
The function returns the list of eggs The function returns the list of eggs
...@@ -706,7 +706,7 @@ If we run build with newest set to False, we won't get an update: ...@@ -706,7 +706,7 @@ If we run build with newest set to False, we won't get an update:
... {'include-dirs': os.path.join(sample_buildout, 'include')}, ... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/', ... links=[link_server], index=link_server+'index/',
... newest=False) ... newest=False)
'/sample-install/extdemo-1.4-py2.4-linux-i686.egg' ['/sample-install/extdemo-1.4-py2.4-linux-i686.egg']
>>> ls(dest) >>> ls(dest)
- demo-0.2-py2.4.egg - demo-0.2-py2.4.egg
...@@ -722,7 +722,7 @@ get an updated egg: ...@@ -722,7 +722,7 @@ get an updated egg:
... 'extdemo', dest, ... 'extdemo', dest,
... {'include-dirs': os.path.join(sample_buildout, 'include')}, ... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/') ... links=[link_server], index=link_server+'index/')
'/sample-install/extdemo-1.5-py2.4-unix-i686.egg' ['/sample-install/extdemo-1.5-py2.4-unix-i686.egg']
>>> ls(dest) >>> ls(dest)
- demo-0.2-py2.4.egg - demo-0.2-py2.4.egg
...@@ -746,7 +746,7 @@ first: ...@@ -746,7 +746,7 @@ first:
... {'include-dirs': os.path.join(sample_buildout, 'include')}, ... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/', ... links=[link_server], index=link_server+'index/',
... versions=dict(extdemo='1.4')) ... versions=dict(extdemo='1.4'))
'/sample-install/extdemo-1.4-py2.4-unix-i686.egg' ['/sample-install/extdemo-1.4-py2.4-unix-i686.egg']
>>> ls(dest) >>> ls(dest)
d extdemo-1.4-py2.4-unix-i686.egg d extdemo-1.4-py2.4-unix-i686.egg
...@@ -814,3 +814,112 @@ And that the source directory contains the compiled extension: ...@@ -814,3 +814,112 @@ And that the source directory contains the compiled extension:
d extdemo.egg-info d extdemo.egg-info
- extdemo.so - extdemo.so
- setup.py - setup.py
Download cache
--------------
Normally, when distributions are installed, if any processing is
needed, they are downloaded from the internet to a temporary directory
and then installed from there. A download cache can be used to avoid
the download step. This can be useful to reduce network access and to
create source distributions of an entire buildout.
A download cache is specified by calling the download_cache
function. The function always returns the previous setting. If no
argument is passed, then the setting is unchanged. Is an argument is
passed, the download cache is set to the given path, which must point
to an existing directory. Passing None clears the cache setting.
To see this work, we'll create a directory and set it as the cache
directory:
>>> cache = tmpdir('cache')
>>> zc.buildout.easy_install.download_cache(cache)
We'll recreate out destination directory:
>>> remove(dest)
>>> dest = tmpdir('sample-install')
We'd like to see what is being fetched from the server, so we'll
enable server logging:
>>> get(link_server+'enable_server_logging')
GET 200 /enable_server_logging
''
Now, if we install demo, and extdemo:
>>> ws = zc.buildout.easy_install.install(
... ['demo==0.2'], dest,
... links=[link_server], index=link_server+'index/',
... always_unzip=True)
GET 200 /
GET 404 /index/demo/
GET 200 /index/
GET 200 /demo-0.2-py2.4.egg
GET 404 /index/demoneeded/
GET 200 /demoneeded-1.1.zip
GET 404 /index/setuptools/
>>> zc.buildout.easy_install.build(
... 'extdemo', dest,
... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/')
GET 404 /index/extdemo/
GET 200 /extdemo-1.5.zip
['/sample-install/extdemo-1.5-py2.4-linux-i686.egg']
Not only will we get eggs in our destination directory:
>>> ls(dest)
d demo-0.2-py2.4.egg
d demoneeded-1.1-py2.4.egg
d extdemo-1.5-py2.4-linux-i686.egg
But we'll get distributions in the cache directory:
>>> ls(cache)
- demo-0.2-py2.4.egg
- demoneeded-1.1.zip
- extdemo-1.5.zip
The cache directory contains uninstalled distributions, such as zipped
eggs or source distributions.
Let's recreate our destination directory and clear the index cache:
>>> remove(dest)
>>> dest = tmpdir('sample-install')
>>> zc.buildout.easy_install.clear_index_cache()
Now when we install the distributions:
>>> ws = zc.buildout.easy_install.install(
... ['demo==0.2'], dest,
... links=[link_server], index=link_server+'index/',
... always_unzip=True)
GET 200 /
GET 404 /index/demo/
GET 200 /index/
GET 404 /index/demoneeded/
GET 404 /index/setuptools/
>>> zc.buildout.easy_install.build(
... 'extdemo', dest,
... {'include-dirs': os.path.join(sample_buildout, 'include')},
... links=[link_server], index=link_server+'index/')
GET 404 /index/extdemo/
['/sample-install/extdemo-1.5-py2.4-linux-i686.egg']
>>> ls(dest)
d demo-0.2-py2.4.egg
d demoneeded-1.1-py2.4.egg
d extdemo-1.5-py2.4-linux-i686.egg
Note that we didn't download the distributions from the link server.
.. Disable the download cache:
>>> zc.buildout.easy_install.download_cache(None)
'/cache'
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