Update merges multiple files

[pinch] / pinch.py

diff --git a/pinch.py b/pinch.py
index 4a6158adb7a7907537d10a9f5273ccc6bd2fafc3..b044faf34c0304dbdd20b55c84c9d27bd1b3832a 100644 (file)
--- a/pinch.py
+++ b/pinch.py
@@ -10,6 +10,7 @@ import os.path
 import shlex
 import shutil
 import subprocess
 import shlex
 import shutil
 import subprocess

+import sys

 import tempfile
 import types
 import urllib.parse
 import tempfile
 import types
 import urllib.parse


@@ -37,6 +38,7 @@ class ChannelTableEntry(types.SimpleNamespace):
 
 
 class Channel(types.SimpleNamespace):
 
 
 class Channel(types.SimpleNamespace):

+    alias_of: str

     channel_html: bytes
     channel_url: str
     forwarded_url: str
     channel_html: bytes
     channel_url: str
     forwarded_url: str


@@ -58,7 +60,7 @@ class Verification:
         self.line_length = 0
 
     def status(self, s: str) -> None:
         self.line_length = 0
 
     def status(self, s: str) -> None:

-        print(s, end=' ', flush=True)
+        print(s, end=' ', file=sys.stderr, flush=True)

         self.line_length += 1 + len(s)  # Unicode??
 
     @staticmethod
         self.line_length += 1 + len(s)  # Unicode??
 
     @staticmethod


@@ -70,7 +72,7 @@ class Verification:
         length = len(message)
         cols = shutil.get_terminal_size().columns
         pad = (cols - (self.line_length + length)) % cols
         length = len(message)
         cols = shutil.get_terminal_size().columns
         pad = (cols - (self.line_length + length)) % cols

-        print(' ' * pad + self._color(message, color))
+        print(' ' * pad + self._color(message, color), file=sys.stderr)

         self.line_length = 0
         if not r:
             raise VerificationError()
         self.line_length = 0
         if not r:
             raise VerificationError()


@@ -454,15 +456,25 @@ def git_revision_name(v: Verification, channel: Channel) -> str:
                       process.stdout.decode().strip())
 
 
                       process.stdout.decode().strip())
 
 

+def read_config(filename: str) -> configparser.ConfigParser:
+    config = configparser.ConfigParser()
+    config.read_file(open(filename), filename)
+    return config
+
+

 def pin(args: argparse.Namespace) -> None:
     v = Verification()
 def pin(args: argparse.Namespace) -> None:
     v = Verification()

-    config = configparser.ConfigParser()
-    config.read_file(open(args.channels_file), args.channels_file)
+    config = read_config(args.channels_file)

     for section in config.sections():
         if args.channels and section not in args.channels:
             continue
 
         channel = Channel(**dict(config[section].items()))
     for section in config.sections():
         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
+

         if hasattr(channel, 'git_revision'):
             channel.old_git_revision = channel.git_revision
             del channel.git_revision
         if hasattr(channel, 'git_revision'):
             channel.old_git_revision = channel.git_revision
             del channel.git_revision


@@ -484,20 +496,33 @@ def pin(args: argparse.Namespace) -> None:
 def update(args: argparse.Namespace) -> None:
     v = Verification()
     config = configparser.ConfigParser()
 def update(args: argparse.Namespace) -> None:
     v = Verification()
     config = configparser.ConfigParser()

-    config.read_file(open(args.channels_file), args.channels_file)
-    exprs = []
-    for section in config.sections():
-        if 'channel_url' in config[section]:
-            tarball = fetch_with_nix_prefetch_url(
-                v, config[section]['tarball_url'], Digest16(
-                    config[section]['tarball_sha256']))
-        else:
-            channel = Channel(**dict(config[section].items()))
-            ensure_git_rev_available(v, channel)
-            tarball = git_get_tarball(v, channel)
-        exprs.append(
-            'f: f { name = "%s"; channelName = "%s"; src = builtins.storePath "%s"; }' %
-            (config[section]['release_name'], section, tarball))
+    exprs = {}
+    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
+
+            if 'channel_url' in config[section]:
+                tarball = fetch_with_nix_prefetch_url(
+                    v, config[section]['tarball_url'], Digest16(
+                        config[section]['tarball_sha256']))
+            else:
+                channel = Channel(**dict(config[section].items()))
+                ensure_git_rev_available(v, channel)
+                tarball = git_get_tarball(v, channel)
+
+            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]:
+                exprs[section] = exprs[str(config[section]['alias_of'])]
+

     command = [
         'nix-env',
         '--profile',
     command = [
         'nix-env',
         '--profile',


@@ -507,7 +532,7 @@ def update(args: argparse.Namespace) -> None:
         '--file',
         '<nix/unpack-channel.nix>',
         '--install',
         '--file',
         '<nix/unpack-channel.nix>',
         '--install',

-        '--from-expression'] + exprs
+        '--from-expression'] + [exprs[name] % name for name in sorted(exprs.keys())]

     if args.dry_run:
         print(' '.join(map(shlex.quote, command)))
     else:
     if args.dry_run:
         print(' '.join(map(shlex.quote, command)))
     else:


@@ -525,7 +550,7 @@ def main() -> None:
     parser_pin.set_defaults(func=pin)
     parser_update = subparsers.add_parser('update')
     parser_update.add_argument('--dry-run', action='store_true')
     parser_pin.set_defaults(func=pin)
     parser_update = subparsers.add_parser('update')
     parser_update.add_argument('--dry-run', action='store_true')

-    parser_update.add_argument('channels_file', type=str)
+    parser_update.add_argument('channels_file', type=str, nargs='+')

     parser_update.set_defaults(func=update)
     args = parser.parse_args()
     args.func(args)
     parser_update.set_defaults(func=update)
     args = parser.parse_args()
     args.func(args)