On Oct 3, 2021, at 00:08, Ian Wadham wrote:

> OK, thanks Ryan, but how about https://guide.macports.org/#installing.xcode ?
> 
> It explicitly says to install Xcode first, as a dependency of MacPorts, and 
> then do xcode-select —install, which is what I have been doing for 10 years 
> or more as a MacPorts user. And I suppose almost all other MacPorts users 
> have too.
> 
> But in that time Xcode has grown from a gigabyte or two to 20 Gb on my 
> current MacOS, Catalina 10.15.7. That is a significant slice of the SSD 
> storage in a shop-standard MacBook Pro. So if a user does not need Xcode as a 
> prerequisite of MacPorts, he/she should not have to carry the time and space 
> overheads of downloading, installing and storing it.
> 
> My question then is please can https://guide.macports.org/#installing.xcode 
> be re-written to help users who do not need Xcode for any other reason?

Yes, it can. Anyone can contribute updates to the documentation by submitting a 
pull request. Much of the Guide has not been updated in over a decade and is in 
dire need of rewrites or replacement.


>>> Couldn’t those ports list Xcode as a build dependency?
>> 
>> They do, by using this keyword:
>> 
>> use_xcode yes
> 
> Chris Jones raised the point on 26/27 September on this thread that some 
> ports require Xcode and gave this as the reason for MacPorts requiring Xcode.
> 
> But how many ports are involved here? What percentage of users are likely to 
> need them? And what is the worst that can happen to a user if he/she happens 
> to run into one and does not have Xcode installed?

MacPorts will print a message saying Xcode is required to install that port.


> I tried port search use_xcode to try and shed some light on these questions, 
> but it gave "no match … found”.

"port search" does not do a search of the entire literal contents of portfiles, 
but you can use grep to do that.

Ports that include the xcode portgroup also most probably require Xcode. I 
would have thought that the xcode 1.0 portgroup would declare "use_xcode yes" 
somewhere in it, but it doesn't seem to. Maybe that is an oversight.

According to this:

port file all | sort -u | xargs grep -El 
'^[[:space:]]*(use_xcode[[:space:]]yes|PortGroup[[:space:]]+xcode[[:space:]])' 
| wc -l

there are around 180 ports that require Xcode. There may be others that require 
Xcode but that do not so indicate yet.


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