Marcel Taeumel uploaded a new version of Installer-Core to project The Trunk: http://source.squeak.org/trunk/Installer-Core-mt.433.mcz
==================== Summary ====================
Name: Installer-Core-mt.433 Author: mt Time: 21 June 2019, 2:48:37.485774 pm UUID: a6e2501c-d477-814a-802e-d2eeacb08b6b Ancestors: Installer-Core-fn.432
Fixes bug in Metacello update code in Installer. Only occurred when calling #ensureRecentMetacello in an image that has Metacello installed already.
=============== Diff against Installer-Core-fn.432 ===============
Item was changed: ----- Method: Installer class>>ensureRecentMetacello (in category 'scripts') ----- ensureRecentMetacello "Copied and adapted from https://github.com/Metacello/metacello/blob/master/README.md" | metacello | ((Smalltalk classNamed: #WebClient) ifNil: [ false ] ifNotNil: [ :webClient | [ (webClient httpHead: 'https://github.com') isSuccess ] on: Error do: [ false ] ]) ifFalse: [ ^self inform: 'Could not connect to "https://github.com%22.%5C%5CYou need an internet connection and SSL support\to install (or update) Metacello.\Please fix those issues and try again.' translated withCRs ]. self isMetacelloInstalled ifFalse: [ "Prepare a clean environment for it." Smalltalk globals removeKey: #Metacello. "Get the Metacello configuration (for Squeak users)" Installer gemsource project: 'metacello'; addPackage: 'ConfigurationOfMetacello'; install.
"Bootstrap Metacello Preview, using mcz files (#'previewBootstrap' symbolic version" ((Smalltalk classNamed: #ConfigurationOfMetacello) project + version: #'previewBootstrap') load]. - version: #'previewBootstrap') load.
+ metacello := Smalltalk classNamed: #Metacello. - metacello := Smalltalk classNamed: #Metacello ].
"Now load latest version of Metacello" metacello new baseline: 'Metacello'; repository: 'github://Metacello/metacello:master/repository'; get. metacello new baseline: 'Metacello'; repository: 'github://Metacello/metacello:master/repository'; load: #('default' 'Metacello-Help'). !