[Pharo-users] Are we able to run pharo images in a read only environment?

[Tim Mackinnon]

Hi - I am trying to run a pharo image in lambda (as an experiment) - however I 
get an error from Pharo about not being able to write to the changes file?

As I am just evaluating some code - I’m not really coding, so don’t need a 
changes file - is there a command line option to not require it?

Also, am I running pharo the most efficient way - I’m using eval on the command 
line and referencing a class with a class method - but is this the best way?

Thanks,

Tim

"errorMessage": "Command failed: ./pharo Pharo.image eval \"Lambda processJSON: 
'{\"key3\":\"value3\",\"key2\":\"value2\",\"key1\":\"value1\"}'\"\n'Pharo 
cannot write to the changes file named /var/task/Pharo.changes.\n\nPlease check 
that you have write permission for this file.\n\nYou won''t be able to save 
this image correctly until you fix this.'\n\u001b[31mError: Can't find the 
requested 
origin\n\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError\n[ self 
cantFindOriginError ] in 
UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [ self 
cantFindOriginError 
]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:\nUnixResolver>>home\n[
 self home / '.config' ] in UnixResolver>>preferences in Block: [ self home / 
'.config' 
]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver>>preferences\nUnixResolver(FileSystemResolver)>>resolve:\nSystemResolver(FileSystemResolver)>>unknownOrigin:\nSystemResolver(FileSystemResolver)>>resolve:\nInteractiveResolver>>unknownOrigin:\n[
 self unknownOrigin: origin ] in InteractiveResolver>>resolve: in Block: [ self 
unknownOrigin: origin 
]\nIdentityDictionary(Dictionary)>>at:ifAbsent:\nInteractiveResolver>>resolve:\nFileLocator>>resolve\nFileLocator(AbstractFileReference)>>exists\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:\nGlobalIdentifier>>ensure\nGlobalIdentifier
 class>>initializeUniqueInstance\nGlobalIdentifier 
class>>uniqueInstance\nSystemSettingsPersistence class>>resumeSystemSettings\n[ 
:persistence | persistence resumeSystemSettings ] in 
PharoCommandLineHandler>>runPreferences in Block: [ :persistence | persistence 
resumeSystemSettings 
...etc...\nBlockClosure>>cull:\nSystemDictionary(Dictionary)>>at:ifPresent:\nSmalltalkImage>>at:ifPresent:\nPharoCommandLineHandler>>runPreferences\nPharoCommandLineHandler>>activate\nPharoCommandLineHandler
 class(CommandLineHandler class)>>activateWith:\n\u001b[0m",
  "errorType": "Error",
  "stackTrace": [
    "'Pharo cannot write to the changes file named /var/task/Pharo.changes.",
    "",
    "Please check that you have write permission for this file.",
    "",
    "You won''t be able to save this image correctly until you fix this.'",
    "\u001b[31mError: Can't find the requested origin",
    "\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError",
    "[ self cantFindOriginError ] in 
UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [ self 
cantFindOriginError ]",
    "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:",
    "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:",
    "UnixResolver>>home",
    "[ self home / '.config' ] in UnixResolver>>preferences in Block: [ self 
home / '.config' ]",
    "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:",
    "UnixResolver>>preferences",
    "UnixResolver(FileSystemResolver)>>resolve:",
    "SystemResolver(FileSystemResolver)>>unknownOrigin:",
    "SystemResolver(FileSystemResolver)>>resolve:",
    "InteractiveResolver>>unknownOrigin:",
    "[ self unknownOrigin: origin ] in InteractiveResolver>>resolve: in Block: 
[ self unknownOrigin: origin ]",
    "IdentityDictionary(Dictionary)>>at:ifAbsent:",
    "InteractiveResolver>>resolve:",
    "FileLocator>>resolve",
    "FileLocator(AbstractFileReference)>>exists",
    
"GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence",
    "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:",
    "GlobalIdentifier>>ensure",
    "GlobalIdentifier class>>initializeUniqueInstance",
    "GlobalIdentifier class>>uniqueInstance",
    "SystemSettingsPersistence class>>resumeSystemSettings",
    "[ :persistence | persistence resumeSystemSettings ] in 
PharoCommandLineHandler>>runPreferences in Block: [ :persistence | persistence 
resumeSystemSettings ...etc...",
    "BlockClosure>>cull:",
    "SystemDictionary(Dictionary)>>at:ifPresent:",
    "SmalltalkImage>>at:ifPresent:",
    "PharoCommandLineHandler>>runPreferences",
    "PharoCommandLineHandler>>activate",
    "PharoCommandLineHandler class(CommandLineHandler class)>>activateWith:",
    "\u001b[0m",
    "ChildProcess.exithandler (child_process.js:204:12)",
    "emitTwo (events.js:106:13)",
    "ChildProcess.emit (events.js:191:7)",
    "maybeClose (internal/child_process.js:886:16)",
    "Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)"
  ]
}