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> I'm a Haskell guy

Don't ever be a 'programming language 'x' guy or girl'. Be yourself, know some tools and skills and be prepared to switch those out for whatever works best in that particular application. If you limit yourself to a certain programming language, no matter how great it seems to be today you've built in your own obsolescence.

Better to be a guy or a girl with x years of Haskell experience and a whole bunch of other stuff besides.

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On the one hand I think that's reading too much into the phrase "Haskell guy", but on the other I disagree in the sense that being a dilettante is no good either. I think people should be "T-shaped", deep on one to a few languages/platforms and some experience with many others. Spending a long time with one language/platform will teach you deeper lessons over time than switching every 6 months.

I used that phrase as a more concise way of communicating pretty much what you are suggesting. I assumed that since my choice of X was Haskell it was pretty much a given that I haven't limited myself to a certain programming language and aggressively investigate promising new technologies.

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