+from abc import ABC, abstractmethod
import argparse
import configparser
import filecmp
os.path.expanduser('~/.cache')))
-Digest16 = NewType('Digest16', str)
-Digest32 = NewType('Digest32', str)
-
-
-class ChannelTableEntry(types.SimpleNamespace):
- absolute_url: str
- digest: Digest16
- file: str
- size: int
- url: str
-
-
-class Channel(types.SimpleNamespace):
- alias_of: str
- channel_html: bytes
- channel_url: str
- forwarded_url: str
- git_ref: str
- git_repo: str
- git_revision: str
- old_git_revision: str
- release_name: str
- table: Dict[str, ChannelTableEntry]
-
-
class VerificationError(Exception):
pass
self.result(True)
+Digest16 = NewType('Digest16', str)
+Digest32 = NewType('Digest32', str)
+
+
+class ChannelTableEntry(types.SimpleNamespace):
+ absolute_url: str
+ digest: Digest16
+ file: str
+ size: int
+ url: str
+
+
+class SearchPath(types.SimpleNamespace, ABC):
+ release_name: str
+
+ @abstractmethod
+ def pin(self, v: Verification, conf: configparser.SectionProxy) -> None:
+ pass
+
+
+class AliasSearchPath(SearchPath):
+ alias_of: str
+
+ def pin(self, v: Verification, conf: configparser.SectionProxy) -> None:
+ assert not hasattr(self, 'git_repo')
+
+
+class Channel(SearchPath):
+ channel_html: bytes
+ channel_url: str
+ forwarded_url: str
+ git_ref: str
+ git_repo: str
+ git_revision: str
+ old_git_revision: str
+ table: Dict[str, ChannelTableEntry]
+
+ def pin(self, v: Verification, conf: configparser.SectionProxy) -> None:
+ if hasattr(self, 'git_revision'):
+ self.old_git_revision = self.git_revision
+ del self.git_revision
+
+ if 'channel_url' in conf:
+ pin_channel(v, self)
+ conf['release_name'] = self.release_name
+ conf['tarball_url'] = self.table['nixexprs.tar.xz'].absolute_url
+ conf['tarball_sha256'] = self.table['nixexprs.tar.xz'].digest
+ else:
+ git_fetch(v, self)
+ conf['release_name'] = git_revision_name(v, self)
+ conf['git_revision'] = self.git_revision
+
+ def fetch(self, v: Verification, section: str,
+ conf: configparser.SectionProxy) -> str:
+ if 'git_repo' not in conf or 'release_name' not in conf:
+ raise Exception(
+ 'Cannot update unpinned channel "%s" (Run "pin" before "update")' %
+ section)
+
+ if 'channel_url' in conf:
+ return fetch_with_nix_prefetch_url(
+ v, conf['tarball_url'], Digest16(
+ conf['tarball_sha256']))
+
+ ensure_git_rev_available(v, self)
+ return git_get_tarball(v, self)
+
+
def compare(a: str, b: str) -> Tuple[List[str], List[str], List[str]]:
def throw(error: OSError) -> None:
process.stdout.decode().strip())
+def read_search_path(conf: configparser.SectionProxy) -> SearchPath:
+ if 'alias_of' in conf:
+ return AliasSearchPath(**dict(conf.items()))
+ return Channel(**dict(conf.items()))
+
+
def read_config(filename: str) -> configparser.ConfigParser:
config = configparser.ConfigParser()
config.read_file(open(filename), filename)
return config
+def read_config_files(
+ filenames: Iterable[str]) -> Dict[str, configparser.SectionProxy]:
+ merged_config: Dict[str, configparser.SectionProxy] = {}
+ for file in filenames:
+ config = read_config(file)
+ for section in config.sections():
+ if section in merged_config:
+ raise Exception('Duplicate channel "%s"' % section)
+ merged_config[section] = config[section]
+ return merged_config
+
+
def pin(args: argparse.Namespace) -> None:
v = Verification()
config = read_config(args.channels_file)
if args.channels and section not in args.channels:
continue
- channel = Channel(**dict(config[section].items()))
-
- if hasattr(channel, 'alias_of'):
- assert not hasattr(channel, 'git_repo')
- continue
+ sp = read_search_path(config[section])
- if hasattr(channel, 'git_revision'):
- channel.old_git_revision = channel.git_revision
- del channel.git_revision
-
- if 'channel_url' in config[section]:
- pin_channel(v, channel)
- config[section]['release_name'] = channel.release_name
- config[section]['tarball_url'] = channel.table['nixexprs.tar.xz'].absolute_url
- config[section]['tarball_sha256'] = channel.table['nixexprs.tar.xz'].digest
- else:
- git_fetch(v, channel)
- config[section]['release_name'] = git_revision_name(v, channel)
- config[section]['git_revision'] = channel.git_revision
+ sp.pin(v, config[section])
with open(args.channels_file, 'w') as configfile:
config.write(configfile)
-def fetch_channel(
- v: Verification,
- section: str,
- conf: configparser.SectionProxy) -> str:
- if 'git_repo' not in conf or 'release_name' not in conf:
- raise Exception(
- 'Cannot update unpinned channel "%s" (Run "pin" before "update")' %
- section)
-
- if 'channel_url' in conf:
- return fetch_with_nix_prefetch_url(
- v, conf['tarball_url'], Digest16(
- conf['tarball_sha256']))
-
- channel = Channel(**dict(conf.items()))
- ensure_git_rev_available(v, channel)
- return git_get_tarball(v, channel)
-
-
def update(args: argparse.Namespace) -> None:
v = Verification()
- config = configparser.ConfigParser()
exprs: Dict[str, str] = {}
- configs = [read_config(filename) for filename in args.channels_file]
- for config in configs:
- for section in config.sections():
- if 'alias_of' in config[section]:
- assert 'git_repo' not in config[section]
- continue
- tarball = fetch_channel(v, section, config[section])
- if section in exprs:
- raise Exception('Duplicate channel "%s"' % section)
- exprs[section] = (
- 'f: f { name = "%s"; channelName = "%%s"; src = builtins.storePath "%s"; }' %
- (config[section]['release_name'], tarball))
-
- for config in configs:
- for section in config.sections():
- if 'alias_of' in config[section]:
- if section in exprs:
- raise Exception('Duplicate channel "%s"' % section)
- exprs[section] = exprs[str(config[section]['alias_of'])]
+ config = read_config_files(args.channels_file)
+ for section in config:
+ sp = read_search_path(config[section])
+ if isinstance(sp, AliasSearchPath):
+ assert 'git_repo' not in config[section]
+ continue
+ tarball = sp.fetch(v, section, config[section])
+ exprs[section] = (
+ 'f: f { name = "%s"; channelName = "%%s"; src = builtins.storePath "%s"; }' %
+ (config[section]['release_name'], tarball))
+
+ for section in config:
+ if 'alias_of' in config[section]:
+ exprs[section] = exprs[str(config[section]['alias_of'])]
command = [
'nix-env',
projects / pinch / blobdiff