In many cases that I've seen in my time on SO/SE, questions are sometimes closed through obscurity rather than knowledge - In this case, by obscurity, I mean a lack of understanding or appreciation around a particular programming language and environment rather than it's direct usage.
Despite the merits of reputation and the privileges that come with it on SO, some developers with experience in a particular language comment, downvote and close questions readily and largely because such questions:
- Can't be answered with ease
- Are considered an edge-case
- They feel it's off-topic because it's to do with installation
- It's using a platform/OS that they don't know
- They're burning their way through the queue for badges
Sometimes, when people see the word installation, they often think it's more applicable on superuser (or different) and close it as off-topic. When in fact, there are SO users who will perhaps have direct experience of what you're looking for and an ability to provide you with a great answer and one which can be relied upon by others in the future.
Often, those with more in-depth experience of particular languages know, by default, that the use of a language isn't just how it's used - but it's installation, linkage, dependencies and more; Something that in this case is directly evidenced by the answer that was provided and that you accepted - It came from a high-rep user who has answered more than 2,000 questions on r...