forked from mirrors/nixpkgs
267 lines
7.5 KiB
Diff
267 lines
7.5 KiB
Diff
diff --git a/lib/rubygems/command_manager.rb b/lib/rubygems/command_manager.rb
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index 0a19016..ef66d30 100755
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--- a/lib/rubygems/command_manager.rb
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+++ b/lib/rubygems/command_manager.rb
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@@ -70,6 +70,7 @@ class Gem::CommandManager
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register_command :unpack
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register_command :update
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register_command :which
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+ register_command :nix
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end
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##
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diff --git a/lib/rubygems/commands/nix_command.rb b/lib/rubygems/commands/nix_command.rb
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new file mode 100644
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index 0000000..24f3479
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--- /dev/null
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+++ b/lib/rubygems/commands/nix_command.rb
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@@ -0,0 +1,228 @@
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+require 'net/http'
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+require 'rubygems/command'
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+require 'rubygems/doc_manager'
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+require 'rubygems/install_update_options'
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+require 'rubygems/dependency_installer'
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+require 'rubygems/local_remote_options'
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+require 'rubygems/validator'
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+require 'rubygems/exceptions'
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+require 'rubygems/version_option'
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+require 'rubygems/version'
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+require 'open3'
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+
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+
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+def nixname(gem)
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+ s = "#{gem}" == gem ? gem : gem.full_name
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+ s.gsub(/[.-]/,'_')
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+end
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+
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+def nixdescription(spec)
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+ desc_from_spec = spec.description
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+ desc = desc_from_spec.sub(/[.].*/,'') # only keep first sentence
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+ desc = desc.length > 120 \
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+ ? "description = ''#{ desc[0..120] }''; # cut to 120 chars" \
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+ : "description = ''#{ desc }'';"
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+ desc = desc.sub(/'';$/,"[...]'';") if desc != desc_from_spec
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+ desc.gsub("\n"," ") # no \ns in description
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+end
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+
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+##
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+# tool creating nix expression to install gems (from ruby forge etc)
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+#
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+# this is work in progress
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+
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+class Gem::Commands::NixCommand < Gem::Command
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+
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+ include Gem::VersionOption
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+ include Gem::LocalRemoteOptions
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+ include Gem::InstallUpdateOptions
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+
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+ def initialize
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+ defaults = Gem::DependencyInstaller::DEFAULT_OPTIONS.merge({
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+ })
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+ super 'nix', 'create a nix file containing expressions of the gems', defaults
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+ end
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+
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+ def description # :nodoc:
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+ <<-EOF
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+ create a nix file containing expressions of the gems
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+ There are many gems. So it's best to only specify some target gems and
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+ take them into acocunt with their deps
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+ TODO more details
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+ EOF
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+ end
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+
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+ def usage # :nodoc:
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+ "#{program_name} GEMNAME [GEMNAME ...] [options] -- --build-flags"
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+ end
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+
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+ def arguments # :nodoc:
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+ "GEMNAME name of gem to be added to the expressions file"
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+ end
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+
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+ def defaults_str # :nodoc:
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+ # what to put in here ? TODO (probably nothing is ok)
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+ ""
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+ end
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+
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+ def execute
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+
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+ begin
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+ @prerelease = false;
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+
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+ args = options[:args];
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+
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+ @gems_with_deps = {}
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+ @seen = {}
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+
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+ # args to dep informations
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+ args.map { |arg|
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+ if arg =~ /(.+)-?(.*)?/ then
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+ gem_name = $1
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+ version = $2.empty? ? Gem::Requirement.default : Gem::Version.new($2)
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+ else
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+ raise Gem::CommandLineError, "could'nt parse arg. expected: name or name-version"
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+ end
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+
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+ warn "adding #{gem_name}\n"
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+
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+ adddep(Gem::Dependency.new gem_name, version)
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+ }
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+
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+ warn " total: #{@gems_with_deps.length}"
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+
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+
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+ out = "
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+ # WARNING: automatically generated CODE
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+ # This section has been generated by gem nix #{args.join(" ")}
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+ # the gem nix command has been added by a nix patch to ruby gems
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+ "
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+ # define aliases
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+ aliases = {}
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+ @gems_with_deps.each{ |key, (spec, src, deps)|
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+ aliases[spec.name] = spec \
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+ if aliases[spec.name].nil? || aliases[spec.name].version < spec.version
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+
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+ src_url = "http://gems.rubyforge.org/gems/#{spec.full_name}.gem"
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+
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+ # [> get true mirror url reading redirect contents
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+ # h = Net::HTTP.new('gems.rubyforge.org', 80)
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+ # resp, data = h.get("/gems/#{spec.full_name}.gem", nil)
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+ # if resp.code == "200" then
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+ # src_url = "http://gems.rubyforge.org/gems/#{spec.full_name}.gem"
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+ # else if resp.code == "302" then
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+ # src_url = resp['location']
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+ # print "redirection: http://gems.rubyforge.org/gems/#{spec.full_name}.gem -> #{src_url}\n"
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+ # else
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+ # raise Gem::DependencyError.new("unkown http return code #{resp} #{data}")
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+ # end
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+ # end
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+
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+ #raise Gem::DependencyError("src_url is nil, 302 redirection failed?") if src_url.nil?
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+
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+ out += "
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+ #{nixname spec} = rubyDerivation {
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+ name = \"ruby-#{spec.full_name}\"; # full_name
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+ nameNoVersion = \"#{nixname spec.name}\";
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+ propagatedBuildInputs = [ #{deps.map {|n| n.nil? ? "" : (nixname n) }.join(" ")} ];
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+ src = fetchurl {
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+ url = \"#{src_url}\";
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+ sha256 = \"#{nixhashof src_url}\";
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+ };
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+ meta = {
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+ homepage = \"#{spec.homepage}\";
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+ license = [#{spec.licenses.map{|l| "\"#{l}\""}.join(" ") }]; # one of ?
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+ #{nixdescription spec}
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+ longDescription = ''#{ spec.description }'';
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+ };
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+ };\n"
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+ }
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+
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+ out += "\n# aliases\n"
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+ aliases.each { |key, spec |
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+ out += "#{nixname key}=#{nixname spec};\n"
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+ }
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+
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+ print out
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+ exit_code = 0
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+
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+ rescue => e
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+ puts e.inspect
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+ puts e.backtrace
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+ end
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+
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+
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+ end
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+
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+ # helper funtions ================
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+
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+ def adddep(dep)
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+ gem = find_gem_with_source(dep)
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+ raise Gem::CommandLineError, "couldn't find #{dep}" if gem.nil?
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+ full_name = gem[0].full_name
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+
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+ return if @seen[full_name]
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+ @seen[full_name] = true # there maybe circular dependencies. thus mark this gem seen as early as possible
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+
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+ # development deps can't be found. Some are old. Thus only add rutime dependencies
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+ deps = gem[0].dependencies.find_all { |d| d.type == :runtime }
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+
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+ warn " total deps of #{full_name}: #{deps.length}"
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+
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+ dep_specs = []
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+ # recurse while collecting deps
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+ deps.each {|dep_var| dep_specs.push(adddep(dep_var)) }
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+
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+
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+ @gems_with_deps[full_name] = [
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+ gem[0], # spec
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+ gem[1], # src
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+ dep_specs # deps
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+ ]
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+ gem[0] # only return spec, no source for dep list
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+ end
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+
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+
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+ # copied from dependency_installer, stripped
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+ def find_gem_with_source(dep)
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+ gems_and_sources = []
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+
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+ # no local
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+
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+ requirements = dep.version_requirements.requirements.map do |req, ver|
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+ req
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+ end
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+
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+ all = true
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+ found = Gem::SpecFetcher.fetcher.fetch dep, all, true, @prerelease
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+ found.reverse[0]
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+ end
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+
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+
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+ def nixhashof(src)
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+ cashfile="#{ENV['HOME']}/.nix-ruby-gems-cache"
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+ cash = {}
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+ if FileTest.exists?(cashfile)
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+ File.open(cashfile,'r') do |f| Marshal.load(f) end
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+ end
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+
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+ if cash[src].nil? then
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+ tmp="/tmp/ruby-gems-nix-tmp-file"
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+ system("nix-prefetch-url #{src.gsub(/([:= `$;])/,'\\\\\1')} > #{tmp} 2>/dev/null")
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+ if $? == 0
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+ file = File.new(tmp)
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+ hash = file.readlines().first().split("\n")[0] # remove trailing \n
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+ file.close()
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+ File.delete(tmp)
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+ cash[src] = hash
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+ else
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+ cash[src] = "no hash"
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+ end
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+
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+ File.open(cashfile, "w+") do |f| Marshal.dump(cash, f) end
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+ end
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+
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+ return cash[src]
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+ end
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+
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+end
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diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
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index d1ef3cb..bf15652 100755
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--- a/lib/rubygems/installer.rb
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+++ b/lib/rubygems/installer.rb
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@@ -545,6 +545,13 @@ Results logged to #{File.join(Dir.pwd, 'gem_make.out')}
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say path if Gem.configuration.really_verbose
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end
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+
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+ if !ENV['NIX_POST_EXTRACT_FILES_HOOK'].nil?
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+ print "\nrunning NIX_POST_EXTRACT_FILES_HOOK #{ENV['NIX_POST_EXTRACT_FILES_HOOK']} #{@gem_dir}\n"
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+ print `#{ENV['NIX_POST_EXTRACT_FILES_HOOK']} #{@gem_dir}`
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+ print "\nrunning NIX_POST_EXTRACT_FILES_HOOK done\n"
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+ end
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+
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end
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##
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