🧑🔬 Prototype: Encourage MFA for owners (CLI) #1
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jenshenny
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Feb 14, 2023
I did a bad thing (script that edits the Gemfile.lock directly) and ended up with a Gemfile.lock that was completely missing some indirect dependencies. While this is my fault and an error is reasonable, I noticed that the error got progressively less friendly in recent versions of bundler. Something similar came up in rubygems#6210, and this commit would have helped with that case as well (although we've already handled this a different way with rubygems#6219). Details: --- Back on Bundler 2.2.23, a corrupt lockfile like this would cause a helpful error: ``` Unable to find a spec satisfying minitest (>= 5.1) in the set. Perhaps the lockfile is corrupted? ``` Bundler 2.3.26 gave a helpful warning: ``` Warning: Your lockfile was created by an old Bundler that left some things out. Because of the missing DEPENDENCIES, we can only install gems one at a time, instead of installing 16 at a time. You can fix this by adding the missing gems to your Gemfile, running bundle install, and then removing the gems from your Gemfile. The missing gems are: * minitest depended upon by activesupport ``` But then continued on and crashed while trying to report the unmet dependency: ``` --- ERROR REPORT TEMPLATE ------------------------------------------------------- NoMethodError: undefined method `full_name' for nil:NilClass lib/bundler/installer/parallel_installer.rb:127:in `block (2 levels) in check_for_unmet_dependencies' ... ``` Bundler 2.4.0 and up crash as above when jobs=1, but crash even harder when run in parallel: ``` --- ERROR REPORT TEMPLATE ------------------------------------------------------- fatal: No live threads left. Deadlock? 3 threads, 3 sleeps current:0x00007fa6b6704660 main thread:0x00007fa6b6704660 * #<Thread:0x000000010833b130 sleep_forever> rb_thread_t:0x00007fa6b6704660 native:0x0000000108985600 int:0 * #<Thread:0x0000000108dea630@Parallel Installer Worker #0 tmp/1/gems/system/gems/bundler-2.5.0.dev/lib/bundler/worker.rb:90 sleep_forever> rb_thread_t:0x00007fa6b67f67c0 native:0x0000700009a62000 int:0 * #<Thread:0x0000000108dea4a0@Parallel Installer Worker #1 tmp/1/gems/system/gems/bundler-2.5.0.dev/lib/bundler/worker.rb:90 sleep_forever> rb_thread_t:0x00007fa6b67f63c0 native:0x0000700009c65000 int:0 <internal:thread_sync>:18:in `pop' tmp/1/gems/system/gems/bundler-2.5.0.dev/lib/bundler/worker.rb:42:in `deq' ... ``` Changes --- This commit fixes the confusing thread deadlock crash by detecting if dependencies are missing such that we'll never be able to enqueue. When that happens we treat it as a failure so the install can finish. That gets us back to the `NoMethodError`, which this commit fixes by using a different warning in the case where no spec is found.
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See Shopify/rubygems.org#9