pin dependencies when building a package

conda_build/build.py

@@ -41,6 +41,9 @@
 else:
     shell_path = '/bin/bash'
 
+channel_urls=()
+override_channels = False
+verbose = True
 
 def prefix_files():
     '''
@@ -129,6 +132,14 @@ def rewrite_file_with_new_prefix(path, data, old_prefix, new_prefix):
     os.chmod(path, stat.S_IMODE(st.st_mode) | stat.S_IWUSR) # chmod u+w
     return data
 
+
+def get_run_dists(m):
+    prefix = join(cc.envs_dirs[0], '_run')
+    rm_rf(prefix)
+    create_env(prefix, [ms.spec for ms in m.ms_depends('run')])
+    return sorted(linked(prefix))
+
+
 def create_info_files(m, files, include_recipe=True):
     '''
     Creates the metadata files that will be stored in the built package.
@@ -173,10 +184,29 @@ def create_info_files(m, files, include_recipe=True):
             print("WARNING: anaconda.org only recognizes about/readme as README.md and README.rst",
                   file=sys.stderr)
 
+    info_index = m.info_index()
+    pin_depends = m.get_value('build/pin_depends')
+    if pin_depends:
+        dists = get_run_dists(m)
+        with open(join(config.info_dir, 'requires'), 'w') as fo:
+            fo.write("""\
+# This file as created when building:
+#
+#     %s.tar.bz2  (on '%s')
+#
+# It can be used to create the runtime environment of this package using:
+# $ conda create --name <env> --file <this file>
+""" % (m.dist(), cc.subdir))
+            for dist in sorted(dists + [m.dist()]):
+                fo.write('%s\n' % '='.join(dist.rsplit('-', 2)))
+        if pin_depends == 'strict':
+            info_index['depends'] = [' '.join(dist.rsplit('-', 2))
+                                     for dist in dists]
+
     # Deal with Python 2 and 3's different json module type reqs
     mode_dict = {'mode': 'w', 'encoding': 'utf-8'} if PY3 else {'mode': 'wb'}
     with open(join(config.info_dir, 'index.json'), **mode_dict) as fo:
-        json.dump(m.info_index(), fo, indent=2, sort_keys=True)
+        json.dump(info_index, fo, indent=2, sort_keys=True)
 
     if include_recipe:
         with open(join(config.info_dir, 'recipe.json'), **mode_dict) as fo:
@@ -250,25 +280,23 @@ def create_info_files(m, files, include_recipe=True):
         shutil.copyfile(join(m.path, m.get_value('app/icon')),
                         join(config.info_dir, 'icon.png'))
 
-def get_build_index(clear_cache=True, channel_urls=(), override_channels=False):
+def get_build_index(clear_cache=True):
     if clear_cache:
         # remove the cache such that a refetch is made,
         # this is necessary because we add the local build repo URL
         fetch_index.cache = {}
     return get_index(channel_urls=[url_path(config.croot)] + list(channel_urls),
-        prepend=not override_channels)
+                     prepend=not override_channels)
 
-def create_env(prefix, specs, clear_cache=True, verbose=True, channel_urls=(),
-    override_channels=False):
+def create_env(prefix, specs, clear_cache=True):
     '''
     Create a conda envrionment for the given prefix and specs.
     '''
     if not isdir(config.bldpkgs_dir):
         os.makedirs(config.bldpkgs_dir)
     update_index(config.bldpkgs_dir)
     if specs: # Don't waste time if there is nothing to do
-        index = get_build_index(clear_cache=True, channel_urls=channel_urls,
-            override_channels=override_channels)
+        index = get_build_index(clear_cache=True)
 
         warn_on_old_conda_build(index)
 
@@ -304,7 +332,6 @@ def warn_on_old_conda_build(index):
 """ % (vers_inst[0], pkgs[-1].version), file=sys.stderr)
 
 
-
 def rm_pkgs_cache(dist):
     '''
     Removes dist from the package cache.
@@ -320,8 +347,7 @@ def bldpkg_path(m):
     '''
     return join(config.bldpkgs_dir, '%s.tar.bz2' % m.dist())
 
-def build(m, get_src=True, verbose=True, post=None, channel_urls=(),
-    override_channels=False, include_recipe=True):
+def build(m, get_src=True, post=None, include_recipe=True):
     '''
     Build the package with the specified metadata.
 
@@ -368,14 +394,12 @@ def build(m, get_src=True, verbose=True, post=None, channel_urls=(),
         # Version number could be missing due to dependency on source info.
         print("BUILD START:", m.dist())
         create_env(config.build_prefix,
-            [ms.spec for ms in m.ms_depends('build')],
-            verbose=verbose, channel_urls=channel_urls,
-            override_channels=override_channels)
+                   [ms.spec for ms in m.ms_depends('build')])
 
         if m.name() in [i.rsplit('-', 2)[0] for i in linked(config.build_prefix)]:
             print("%s is installed as a build dependency. Removing." %
                 m.name())
-            index = get_build_index(clear_cache=False, channel_urls=channel_urls, override_channels=override_channels)
+            index = get_build_index(clear_cache=False)
             actions = plan.remove_actions(config.build_prefix, [m.name()], index=index)
             assert not plan.nothing_to_do(actions), actions
             plan.display_actions(actions, index)
@@ -483,7 +507,7 @@ def build(m, get_src=True, verbose=True, post=None, channel_urls=(),
         print("STOPPING BUILD BEFORE POST:", m.dist())
 
 
-def test(m, verbose=True, channel_urls=(), override_channels=False, move_broken=True):
+def test(m, move_broken=True):
     '''
     Execute any test scripts for the given package.
 
@@ -533,8 +557,7 @@ def test(m, verbose=True, channel_urls=(), override_channels=False, move_broken=
         # as the tests are run by perl, we need to specify it
         specs += ['perl %s*' % environ.get_perl_ver()]
 
-    create_env(config.test_prefix, specs, verbose=verbose,
-        channel_urls=channel_urls, override_channels=override_channels)
+    create_env(config.test_prefix, specs)
 
     env = dict(os.environ)
     env.update(environ.get_dict(m, prefix=config.test_prefix))
@@ -595,6 +618,6 @@ def tests_failed(m, move_broken):
     if not isdir(config.broken_dir):
         os.makedirs(config.broken_dir)
 
-    if move_broken: 
+    if move_broken:
         shutil.move(bldpkg_path(m), join(config.broken_dir, "%s.tar.bz2" % m.dist()))
     sys.exit("TESTS FAILED: " + m.dist())

conda_build/main_build.py

@@ -266,7 +266,9 @@ def execute(args, parser):
     from conda_build.metadata import MetaData
 
     check_external()
-    channel_urls = args.channel or ()
+    build.channel_urls = args.channel or ()
+    build.override_channels = args.override_channels
+    build.verbose = not args.quiet
 
     if on_win:
         # needs to happen before any c extensions are imported that might be
@@ -322,9 +324,7 @@ def execute(args, parser):
         if not isdir(config.bldpkgs_dir):
             makedirs(config.bldpkgs_dir)
         update_index(config.bldpkgs_dir)
-        index = build.get_build_index(clear_cache=True,
-            channel_urls=channel_urls,
-            override_channels=args.override_channels)
+        index = build.get_build_index(clear_cache=True)
 
     already_built = []
     to_build_recursive = []
@@ -378,8 +378,7 @@ def execute(args, parser):
                 print(build.bldpkg_path(m))
                 continue
             elif args.test:
-                build.test(m, verbose=not args.quiet,
-                    channel_urls=channel_urls, override_channels=args.override_channels, move_broken=False)
+                build.test(m, move_broken=False)
             elif args.source:
                 source.provide(m.path, m.get_section('source'))
                 print('Source tree in:', source.get_dir())
@@ -396,9 +395,8 @@ def execute(args, parser):
                 else:
                     post = None
                 try:
-                    build.build(m, verbose=not args.quiet, post=post,
-                        channel_urls=channel_urls,
-                        override_channels=args.override_channels, include_recipe=args.include_recipe)
+                    build.build(m, post=post,
+                                include_recipe=args.include_recipe)
                 except (RuntimeError, SystemExit) as e:
                     error_str = str(e)
                     if error_str.startswith('No packages found') or error_str.startswith('Could not find some'):
@@ -461,8 +459,8 @@ def execute(args, parser):
                     continue
 
                 if not args.notest:
-                    build.test(m, verbose=not args.quiet,
-                        channel_urls=channel_urls, override_channels=args.override_channels)
+                    build.test(m)
+
                 binstar_upload = True
 
             if need_cleanup:

conda_build/metadata.py

@@ -128,6 +128,14 @@ def ensure_valid_license_family(meta):
             "about/license_family '%s' not allowed. Allowed families are %s." %
             (license_family, comma_join(sorted(allowed_license_families)))))
 
+def ensure_valid_fields(meta):
+    try:
+        pin_depends = meta['build']['pin_depends']
+    except KeyError:
+        pin_depends = ''
+    if pin_depends not in ('', 'record', 'strict'):
+        raise RuntimeError("build/pin_depends cannot be '%s'" % pin_depends)
+
 def parse(data):
     data = select_lines(data, ns_cfg())
     res = yamlize(data)
@@ -154,10 +162,11 @@ def parse(data):
             res[section] = {}
         if res[section].get(key, None) is None:
             res[section][key] = []
+
     # ensure those are strings
-    for field in ('package/version', 'build/string', 'source/svn_rev',
-                  'source/git_tag', 'source/git_branch', 'source/md5',
-                  'source/git_rev', 'source/path'):
+    for field in ('package/version', 'build/string', 'build/pin_depends',
+                  'source/svn_rev', 'source/git_tag', 'source/git_branch',
+                  'source/md5', 'source/git_rev', 'source/path'):
         section, key = field.split('/')
         if res.get(section) is None:
             res[section] = {}
@@ -188,6 +197,7 @@ def parse(data):
         elif val in falses:
             res[section][key] = False
 
+    ensure_valid_fields(res)
     ensure_valid_license_family(res)
     return sanitize(res)
 
@@ -256,7 +266,9 @@ def _git_clean(source_meta):
               'no_link', 'binary_relocation', 'script', 'noarch_python',
               'has_prefix_files', 'binary_has_prefix_files', 'script_env',
               'detect_binary_files_with_prefix', 'rpaths',
-              'always_include_files', 'skip', 'msvc_compiler'],
+              'always_include_files', 'skip', 'msvc_compiler',
+              'pin_depends' # pin_depends is experimental still
+             ],
     'requirements': ['build', 'run', 'conflicts'],
     'app': ['entry', 'icon', 'summary', 'type', 'cli_opts',
             'own_environment'],