35   actions[actionName] = (staging, pkg, log) => {  argument
36     validate('SOO', [staging, pkg, log])
38     if (pkg.failed) return BB.resolve()
40       if (!pkg.rollback) pkg.rollback = []
41       pkg.rollback.unshift(action.rollback)
44       if (!pkg.commit) pkg.commit = []
45       pkg.commit.push(action.commit)
49     if (pkg.knownInstallable) {
50       actionP = runAction(action, staging, pkg, log)
52       actionP = isInstallable(null, pkg.package).then(() => {
53         pkg.knownInstallable = true
54         return runAction(action, staging, pkg, log)
62         andAddParentToErrors(pkg.parent, cb)(err)
64         return handleOptionalDepErrors(pkg, err)
73 function runAction (action, staging, pkg, log) {  argument
75     const result = action(staging, pkg, log, cb)
82 function markAsFailed (pkg) {  argument
83   if (pkg.failed) return
84   pkg.failed = true
85   pkg.requires.forEach((req) => {
93 function handleOptionalDepErrors (pkg, err) {  argument
94   markAsFailed(pkg)
95   var anyFatal = failedDependency(pkg)
99     reportOptionalFailure(pkg, null, err)
104 function doOne (cmd, staging, pkg, log, next) {  argument
106   const prepped = prepareAction([cmd, pkg], staging, log)
185   var pkg = action[1]
187   return [actions[cmd], staging, pkg, log.newGroup(cmd + ':' + moduleName(pkg))]