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#!/bin/env python
import sys
import os
import subprocess
import argparse
import re
import shutil
import rpm
import urlparse
import traceback
import toposort
class SPECTemplate(object):
def __init__(self, specFilename, outputDir, inputDir=None, buildRootInclude=None, translateTable=None, repositoryDir=None, allPackagesDir=None, maintainer="MAINTAINER"):
rpm.addMacro("buildroot","$out")
rpm.addMacro("_libdir","lib")
rpm.addMacro("_libexecdir","libexec")
rpm.addMacro("_sbindir","sbin")
rpm.addMacro("_sysconfdir","etc")
rpm.addMacro("_topdir","SPACER_DIR_FOR_REMOVAL")
rpm.addMacro("_sourcedir","SOURCE_DIR_SPACER")
self.packageGroups = [ "ocaml", "python" ]
ts = rpm.TransactionSet()
self.specFilename = specFilename
self.spec = ts.parseSpec(specFilename)
self.inputDir = inputDir
self.buildRootInclude = buildRootInclude
self.repositoryDir = repositoryDir
self.allPackagesDir = allPackagesDir
self.maintainer = maintainer
self.translateTable = translateTable
self.facts = self.getFacts()
self.key = self.getSelfKey()
tmpDir = os.path.join(outputDir, self.rewriteName(self.spec.sourceHeader['name']))
if self.translateTable != None:
self.relOutputDir = self.translateTable.path(self.key,tmpDir)
else:
self.relOutputDir = tmpDir
self.final_output_dir = os.path.normpath( self.relOutputDir )
if self.repositoryDir != None:
self.potential_repository_dir = os.path.normpath( os.path.join(self.repositoryDir,self.relOutputDir) )
def rewriteCommands(self, string):
string = string.replace('SPACER_DIR_FOR_REMOVAL/','')
string = string.replace('SPACER_DIR_FOR_REMOVAL','')
string = '\n'.join(map(lambda line: ' '.join(map(lambda x: x.replace('SOURCE_DIR_SPACER/',('${./' if (self.buildRootInclude == None) else '${buildRoot}/usr/share/buildroot/SOURCES/'))+('}' if (self.buildRootInclude == None) else '') if x.startswith('SOURCE_DIR_SPACER/') else x, line.split(' '))), string.split('\n')))
string = string.replace('\n','\n ')
string = string.rstrip()
return string
def rewriteName(self, string):
parts = string.split('-')
parts = filter(lambda x: not x == "devel", parts)
parts = filter(lambda x: not x == "doc", parts)
if len(parts) > 1 and parts[0] in self.packageGroups:
return parts[0] + '-' + ''.join(parts[1:2] + map(lambda x: x.capitalize(), parts[2:]))
else:
return ''.join(parts[:1] + map(lambda x: x.capitalize(), parts[1:]))
def rewriteInputs(self,target,inputs):
camelcase = lambda l: l[:1] + map(lambda x: x.capitalize(), l[1:])
filterDevel = lambda l: filter(lambda x: not x == "devel", l)
filterDoc = lambda l: filter(lambda x: not x == "doc", l)
rewrite = lambda l: ''.join(camelcase(filterDoc(filterDevel(l))))
def filterPackageGroup(target):
if target == None:
return [ rewrite(x.split('-')) for x in inputs if (not x.split('-')[0] in self.packageGroups) or (len(x.split('-')) == 1) ]
elif target in self.packageGroups:
return [ target + '_' + rewrite(x.split('-')[1:]) for x in inputs if (x.split('-')[0] == target) and (len(x.split('-')) > 1)]
else:
raise Exception("Unknown target")
return []
if target == None:
packages = filterPackageGroup(None)
packages.sort()
elif target in self.packageGroups:
packages = filterPackageGroup(target)
packages.sort()
elif target == "ALL":
packages = []
for t in [None] + self.packageGroups:
tmp = filterPackageGroup(t)
tmp.sort()
packages += tmp
else:
raise Exception("Unknown target")
packages = []
return packages
def getBuildInputs(self,target=None):
inputs = self.rewriteInputs(target,self.spec.sourceHeader['requires'])
if self.translateTable != None:
return map(lambda x: self.translateTable.name(x), inputs)
else:
return inputs
def getSelfKey(self):
name = self.spec.sourceHeader['name']
if len(name.split('-')) > 1 and name.split('-')[0] in self.packageGroups:
key = self.rewriteInputs(name.split('-')[0], [self.spec.sourceHeader['name']])[0]
else:
key = self.rewriteInputs(None, [self.spec.sourceHeader['name']])[0]
return key
def getSelf(self):
if self.translateTable != None:
return self.translateTable.name(self.key)
else:
return self.key
def copyPatches(self, input_dir, output_dir):
patches = [source for (source, _, flag) in self.spec.sources if flag==2]
for filename in patches:
shutil.copyfile(os.path.join(input_dir, filename), os.path.join(output_dir, filename))
def copySources(self, input_dir, output_dir):
filenames = [source for (source, _, flag) in self.spec.sources if flag==1 if not urlparse.urlparse(source).scheme in ["http", "https"] ]
for filename in filenames:
shutil.copyfile(os.path.join(input_dir, filename), os.path.join(output_dir, filename))
def getFacts(self):
facts = {}
facts["name"] = self.rewriteName(self.spec.sourceHeader['name'])
facts["version"] = self.spec.sourceHeader['version']
facts["url"] = []
facts["sha256"] = []
sources = [source for (source, _, flag) in self.spec.sources if flag==1 if urlparse.urlparse(source).scheme in ["http", "https"] ]
for url in sources:
p = subprocess.Popen(['nix-prefetch-url', url], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output, err = p.communicate()
sha256 = output[:-1] #remove new line
facts["url"].append(url)
facts["sha256"].append(sha256)
patches = [source for (source, _, flag) in self.spec.sources if flag==2]
if self.buildRootInclude == None:
facts["patches"] = map(lambda x: './'+x, patches)
else:
facts["patches"] = map(lambda x: '"${buildRoot}/usr/share/buildroot/SOURCES/'+x+'"', reversed(patches))
return facts
@property
def name(self):
out = ' name = "' + self.facts["name"] + '-' + self.facts["version"] + '";\n'
out += ' version = "' + self.facts['version'] + '";\n'
return out
@property
def src(self):
sources = [source for (source, _, flag) in self.spec.sources if flag==1 if urlparse.urlparse(source).scheme in ["http", "https"] ]
out = ''
for (url,sha256) in zip(self.facts['url'],self.facts['sha256']):
out += ' src = fetchurl {\n'
out += ' url = "' + url + '";\n'
out += ' sha256 = "' + sha256 + '";\n'
out += ' };\n'
return out
@property
def patch(self):
out = ' patches = [ ' + ' '.join(self.facts['patches']) + ' ];\n'
return out
@property
def buildInputs(self):
out = ' buildInputs = [ '
out += ' '.join(self.getBuildInputs("ALL"))
out += ' ];\n'
return out
@property
def configure(self):
out = ' configurePhase = \'\'\n ' + self.rewriteCommands(self.spec.prep) + '\n \'\';\n';
return out
@property
def build(self):
out = ' buildPhase = \'\'\n ' + self.rewriteCommands(self.spec.build) + '\n \'\';\n';
return out
@property
def install(self):
out = ' installPhase = \'\'\n ' + self.rewriteCommands(self.spec.install) + '\n \'\';\n';
return out
@property
def ocamlExtra(self):
if "ocaml" in self.getBuildInputs("ALL"):
return ' createFindlibDestdir = true;\n'
else:
return ''
@property
def meta(self):
out = ' meta = {\n'
out += ' homepage = ' + self.spec.sourceHeader['url'] + ';\n'
out += ' description = "' + self.spec.sourceHeader['summary'] + '";\n'
out += ' license = stdenv.lib.licenses.' + self.spec.sourceHeader['license'] + ';\n'
out += ' platforms = [ "i686-linux" "x86_64-linux" ];\n'
out += ' maintainers = with stdenv.lib.maintainers; [ ' + self.maintainer + ' ];\n'
out += ' };\n'
out += '}\n'
return out
def __str__(self):
head = '{stdenv, fetchurl, ' + ', '.join(self.getBuildInputs("ALL")) + '}:\n\n'
head += 'stdenv.mkDerivation {\n'
body = [ self.name, self.src, self.patch, self.buildInputs, self.configure, self.build, self.ocamlExtra, self.install, self.meta ]
return head + '\n'.join(body)
def getTemplate(self):
head = '{stdenv, buildRoot, fetchurl, ' + ', '.join(self.getBuildInputs("ALL")) + '}:\n\n'
head += 'let\n'
head += ' buildRootInput = (import "${buildRoot}/usr/share/buildroot/buildRootInput.nix") { fetchurl=fetchurl; buildRoot=buildRoot; };\n'
head += 'in\n\n'
head += 'stdenv.mkDerivation {\n'
head += ' inherit (buildRootInput.'+self.rewriteName(self.spec.sourceHeader['name'])+') name version src;\n'
head += ' patches = buildRootInput.'+self.rewriteName(self.spec.sourceHeader['name'])+'.patches ++ [];\n\n'
body = [ self.buildInputs, self.configure, self.build, self.ocamlExtra, self.install, self.meta ]
return head + '\n'.join(body)
def getInclude(self):
head = self.rewriteName(self.spec.sourceHeader['name']) + ' = {\n'
body = [ self.name, self.src, self.patch ]
return head + '\n'.join(body) + '};\n'
def __cmp__(self,other):
if self.getSelf() in other.getBuildInputs("ALL"):
return 1
else:
return -1
def callPackage(self):
callPackage = ' ' + self.getSelf() + ' = callPackage ' + os.path.relpath(self.final_output_dir, self.allPackagesDir) + ' {'
newline = False;
for target in self.packageGroups:
tmp = self.getBuildInputs(target)
if len(tmp) > 0:
newline = True;
callPackage += '\n ' + 'inherit (' + target + 'Packages) ' + ' '.join(tmp) + ';'
if newline:
callPackage += '\n };'
else:
callPackage += ' };'
return callPackage
def generateCombined(self):
if not os.path.exists(self.final_output_dir):
os.makedirs(self.final_output_dir)
if self.inputDir != None:
self.copySources(self.inputDir, self.final_output_dir)
self.copyPatches(self.inputDir, self.final_output_dir)
nixfile = open(os.path.join(self.final_output_dir,'default.nix'), 'w')
nixfile.write(str(self))
nixfile.close()
shutil.copyfile(self.specFilename, os.path.join(self.final_output_dir, os.path.basename(self.specFilename)))
def generateSplit(self):
if not os.path.exists(self.final_output_dir):
os.makedirs(self.final_output_dir)
nixfile = open(os.path.join(self.final_output_dir,'default.nix'), 'w')
nixfile.write(self.getTemplate())
nixfile.close()
return self.getInclude()
class NixTemplate(object):
def __init__(self, nixfile):
self.nixfile = nixfile
self.original = { "name":None, "version":None, "url":None, "sha256":None, "patches":None }
self.update = { "name":None, "version":None, "url":None, "sha256":None, "patches":None }
self.matchedLines = {}
if os.path.isfile(nixfile):
with file(nixfile, 'r') as infile:
for (n,line) in enumerate(infile):
name = re.match(r'^\s*name\s*=\s*"(.*?)"\s*;\s*$', line)
version = re.match(r'^\s*version\s*=\s*"(.*?)"\s*;\s*$', line)
url = re.match(r'^\s*url\s*=\s*"?(.*?)"?\s*;\s*$', line)
sha256 = re.match(r'^\s*sha256\s*=\s*"(.*?)"\s*;\s*$', line)
patches = re.match(r'^\s*patches\s*=\s*(\[.*?\])\s*;\s*$', line)
if name != None and self.original["name"] == None:
self.original["name"] = name.group(1)
self.matchedLines[n] = "name"
if version != None and self.original["version"] == None:
self.original["version"] = version.group(1)
self.matchedLines[n] = "version"
if url != None and self.original["url"] == None:
self.original["url"] = url.group(1)
self.matchedLines[n] = "url"
if sha256 != None and self.original["sha256"] == None:
self.original["sha256"] = sha256.group(1)
self.matchedLines[n] = "sha256"
if patches != None and self.original["patches"] == None:
self.original["patches"] = patches.group(1)
self.matchedLines[n] = "patches"
def generateUpdated(self, nixOut):
nixTemplateFile = open(os.path.normpath(self.nixfile),'r')
nixOutFile = open(os.path.normpath(nixOut),'w')
for (n,line) in enumerate(nixTemplateFile):
if self.matchedLines.has_key(n) and self.update[self.matchedLines[n]] != None:
nixOutFile.write(line.replace(self.original[self.matchedLines[n]], self.update[self.matchedLines[n]], 1))
else:
nixOutFile.write(line)
nixTemplateFile.close()
nixOutFile.close()
def loadUpdate(self,orig):
if orig.has_key("name") and orig.has_key("version"):
self.update["name"] = orig["name"] + '-' + orig["version"]
self.update["version"] = orig["version"]
if orig.has_key("url") and orig.has_key("sha256") and len(orig["url"])>0:
self.update["url"] = orig["url"][0]
self.update["sha256"] = orig["sha256"][0]
for url in orig["url"][1:-1]:
sys.stderr.write("WARNING: URL has been dropped: %s\n" % url)
if orig.has_key("patches"):
self.update["patches"] = '[ ' + ' '.join(orig['patches']) + ' ]'
class TranslationTable(object):
def __init__(self):
self.tablePath = {}
self.tableName = {}
def update(self, key, path, name=None):
self.tablePath[key] = path
if name != None:
self.tableName[key] = name
def readTable(self, tableFile):
with file(tableFile, 'r') as infile:
for line in infile:
match = re.match(r'^(.+?)\s+(.+?)\s+(.+?)\s*$', line)
if match != None:
if not self.tablePath.has_key(match.group(1)):
self.tablePath[match.group(1)] = match.group(2)
if not self.tableName.has_key(match.group(1)):
self.tableName[match.group(1)] = match.group(3)
else:
match = re.match(r'^(.+?)\s+(.+?)\s*$', line)
if not self.tablePath.has_key(match.group(1)):
self.tablePath[match.group(1)] = match.group(2)
def writeTable(self, tableFile):
outFile = open(os.path.normpath(tableFile),'w')
keys = self.tablePath.keys()
keys.sort()
for k in keys:
if self.tableName.has_key(k):
outFile.write( k + " " + self.tablePath[k] + " " + self.tableName[k] + "\n" )
else:
outFile.write( k + " " + self.tablePath[k] + "\n" )
outFile.close()
def name(self, key):
if self.tableName.has_key(key):
return self.tableName[key]
else:
return key
def path(self, key, orig):
if self.tablePath.has_key(key):
return self.tablePath[key]
else:
return orig
if __name__ == "__main__":
#Parse command line options
parser = argparse.ArgumentParser(description="Generate .nix templates from RPM spec files")
parser.add_argument("specs", metavar="SPEC", nargs="+", help="spec file")
parser.add_argument("-o", "--output", metavar="OUT_DIR", required=True, help="output directory")
parser.add_argument("-b", "--buildRoot", metavar="BUILDROOT_DIR", default=None, help="buildroot output directory")
parser.add_argument("-i", "--inputSources", metavar="IN_DIR", default=None, help="sources input directory")
parser.add_argument("-m", "--maintainer", metavar="MAINTAINER", default="__NIX_MAINTAINER__", help="package maintainer")
parser.add_argument("-r", "--repository", metavar="REP_DIR", default=None, help="nix repository to compare output against")
parser.add_argument("-t", "--translate", metavar="TRANSLATE_TABLE", default=None, help="path of translation table for name and path")
parser.add_argument("-u", "--translateOut", metavar="TRANSLATE_OUT", default=None, help="output path for updated translation table")
parser.add_argument("-a", "--allPackages", metavar="ALL_PACKAGES", default=None, help="top level dir to call packages from")
args = parser.parse_args()
allPackagesDir = os.path.normpath( os.path.dirname(args.allPackages) )
if not os.path.exists(allPackagesDir):
os.makedirs(allPackagesDir)
buildRootContent = {}
nameMap = {}
newTable = TranslationTable()
if args.translate != None:
table = TranslationTable()
table.readTable(args.translate)
newTable.readTable(args.translate)
else:
table = None
for specPath in args.specs:
try:
sys.stderr.write("INFO: generate nix file from: %s\n" % specPath)
spec = SPECTemplate(specPath, args.output, args.inputSources, args.buildRoot, table, args.repository, allPackagesDir, args.maintainer)
if args.repository != None:
if os.path.exists(os.path.join(spec.potential_repository_dir,'default.nix')):
nixTemplate = NixTemplate(os.path.join(spec.potential_repository_dir,'default.nix'))
nixTemplate.loadUpdate(spec.facts)
if not os.path.exists(spec.final_output_dir):
os.makedirs(spec.final_output_dir)
nixTemplate.generateUpdated(os.path.join(spec.final_output_dir,'default.nix'))
else:
sys.stderr.write("WARNING: Repository does not contain template: %s\n" % os.path.join(spec.potential_repository_dir,'default.nix'))
if args.buildRoot == None:
spec.generateCombined()
else:
buildRootContent[spec.key] = spec.generateSplit()
else:
if args.buildRoot == None:
spec.generateCombined()
else:
buildRootContent[spec.key] = spec.generateSplit()
newTable.update(spec.key,spec.relOutputDir,spec.getSelf())
nameMap[spec.getSelf()] = spec
except Exception, e:
sys.stderr.write("ERROR: %s failed with:\n%s\n%s\n" % (specPath,e.message,traceback.format_exc()))
if args.translateOut != None:
if not os.path.exists(os.path.dirname(os.path.normpath(args.translateOut))):
os.makedirs(os.path.dirname(os.path.normpath(args.translateOut)))
newTable.writeTable(args.translateOut)
graph = {}
for k, v in nameMap.items():
graph[k] = set(v.getBuildInputs("ALL"))
sortedSpecs = toposort.toposort_flatten(graph)
sortedSpecs = filter( lambda x: x in nameMap.keys(), sortedSpecs)
allPackagesFile = open(os.path.normpath( args.allPackages ), 'w')
allPackagesFile.write( '\n\n'.join(map(lambda x: x.callPackage(), map(lambda x: nameMap[x], sortedSpecs))) )
allPackagesFile.close()
if args.buildRoot != None:
buildRootFilename = os.path.normpath( args.buildRoot )
if not os.path.exists(os.path.dirname(buildRootFilename)):
os.makedirs(os.path.dirname(buildRootFilename))
buildRootFile = open(buildRootFilename, 'w')
buildRootFile.write( "{ fetchurl, buildRoot }: {\n\n" )
keys = buildRootContent.keys()
keys.sort()
for k in keys:
buildRootFile.write( buildRootContent[k] + '\n' )
buildRootFile.write( "}\n" )
buildRootFile.close()