Implementation chicken:
When there's an obvious feature gap in an ecosystem and everyone is waiting for someone else to write it.
I see this most frequently with OSS toolchains. Basic functionality in new programming languages is another common scenario.
I frequently find myself running:
$ slowish
$ slowish | jq
$ slowish | jq | grep
I feel there must be a better way to build up pipelines incrementally without re-running.
I could save each output to a file, but it's more verbose, and most of these tools have nicer output when stdout is a TTY.
Sometimes programming tools are so good that you miss them when using other languages. I see these mentioned the most frequently:
* IntelliJ (for Java)
* Slime+Emacs (for Common Lisp)
* Pharo (for Smalltalk)
I'm struck that they all have bespoke UIs.