On 21 Apr 2009, at 4:52 pm, Jules Bean wrote:
The point I was making, which is scarcely important enough to bother explaining again, is that having the same *default* as other software is a virtue.
That point is mistaken. I have no idea how many people are unable to use that default, but there are lots of people at this University in my situation. A default which means we can't install stuff is a default that I cannot regard with happiness, and which I cannot comprehend anyone contemplating with complacency. One of the suggestions I have made is that an installer could/should investigate whether it *can* install in the "standard" place (since ghc on my Mac is in /bin, not /usr/local/bin, and since I certainly didn't put it there, I wonder just how standard a standard place is), and if it *can't*, instead of failing miserably, it should *out of the box* *without recompiling from sources* let the user put it wherever it needs to go. This is compatible with the "default" on all systems where the default would actually _work_, while being _useful_ on systems where it wouldn't. It shouldn't be necessary to point out that the people least able to install in /usr/local are by and large going to be the people least able to build from sources, so saying "build from sources if you can't install in a standard place" would not be user-friendly.
In point of fact, I'm sure that a larger proportion of haskell users have their own machine than don't.
That's the wrong question. In addition to the several machines in my office, and the departmental laptop, I _do_ have several machines of my own. But the mere fact of possessing my own machines does NOT mean that I am able to install stuff on the machines I spend most of my time using. Some of the right questions are - how many potential <whatever> users would need to have <whatever> installed on _some_ machine they do NOT have administrator access to? - if people find Mac and Windows installers that show you where something is going to be put and offer you the chance to change it acceptable, why exactly would that be unacceptable under Linux or Solaris? - since we know install-anywhere binary releases are possible, and since we know that an installer _can_ probe to see whether installation in /usr/local (or any other "standard" place) is possible, why not do it?