Maven was a great idea. Introduce a high barrier to entry for publishing packages. Paired with a search box operated by carrier pidgeon, this effectively meant what you were looking for didn't exist. Every time you had any kind of quirky need, you had to write it out by hand, or find someone smarter than you to do it for you, or worst of all buy it from a vendor for lots of money at horrible quality. People recite 'DSA is bad for coding challenges, when will I need to write a hash map', but once upon a time you did have to write a hash map here and there. Supply chain vulnerability is a cost, but the product was worth the cost: you can just import the darn package!

I need a map of key ranges to values with intelligent range merging, it is right there on crates.io to import, it has been there since 2016, Maven Central didn't get one until 2018. In the olden days either it was in Apache Commons or it didn't exist. Halcyon days those.