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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: ALR unable to get many packages
Date: Sat, 05 Aug 2023 08:28:53 +0100
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Kenneth Wolcott <kennethwolcott@gmail.com> writes:

>   I am on a Mac Mini with an M1 chip and I have GNAT Ada 13.1 (thanks Simon!)

I take it you're using the aarch64 (Apple silicon) version?

>   ALR does not work very well for me.  I am unable to "alr get" many
> packages (see below for an example).

Please let me know which (external) packages you're having trouble with.

>   Updating the index does not help in most of these cases.
>
>   Is ALR incompatible with an external GNAT compiler?

No.

Which version of alr are you using? If it's 2.0-dev (from my build, see
below, for Apple silicon) then it understands Homebrew. 

https://github.com/simonjwright/alire-index.mac/releases/tag/alr_binary_aarch64-1.0.0

Not all index entries for external packages have been updated to include
Homebrew links (this includes openssl), but you should still be able to
say "brew install <whatever>" and have it work.

At present, you need to have something like this in your startup
scripts: working on it!

   eval $(/opt/homebrew/bin/brew shellenv)
   export C_INCLUDE_PATH=$HOMEBREW_PREFIX/include
   export LIBRARY_PATH=$HOMEBREW_PREFIX/lib

>   What am I doing wrong here?

Running past the wavefront :-(

> alr --no-color get aws

It took me a while to work out that I needed to use
--no-color. Investigating what's going wrong.

> Warning:
> Warning:    New solution is incomplete.
> Warning:    +i gnat     13.1.0 (new,installed,gnat_external)
> Warning:    +  gnatcoll 23.0.0 (new)
> Warning:    +  libgpr   23.0.0 (new,indirect)
> Warning:    +  make     3.81.0 (new)
> Warning:    +~ openssl  *      (new,external)
> Warning:    +  xmlada   23.0.0 (new)
> Warning:
> Warning: Could not find a complete solution for aws=23.0.0
> Build will fail unless externals are made available, do you want to continue?
> [Y] Yes  [N] No  (default is No) n
> ERROR: Crate retrieval abandoned.

If you "brew install openssl" you should be able to say "Y" here.

I found there was an extra setting required:

   alr build -- -XTARGET=aarch64-apple-darwin21

(find the correct setting by "gcc -v" and looking at the "Target:" line).