Fail to execute a custom local portfile

[Rainer Müller]

On 2016-08-21 15:37, Giovanni Grieco wrote:
> But I can’t install my package via ‘port install’ because MacPorts
> throws me the following error:
> 
> “Unable to execute port: Could not open file:
> /Users/…/Documents/macports/… /Portfile”
> 
>  
> 
> I have the file in that directory, I can open and write it. So I don’t
> know what the problem is.
> 
> Permissions are all set to macports:macports 755, both directories and
> files; port lint doesn’t find any error  related to Portfile; I have
> sources.conf with my local repository.

The port command drops privileges to the macports user, which therefore
needs access to the Portfile.

You need to check the permissions on all components of the path leading
up to the Portfile, not just the Portfile itself. In this case, the
~/Documents directory would be 0700 by default, if I remember correctly.

To manually test the access, you can use sudo to switch to this user:

$ sudo -u macports cat $(port file kwm)

You can then check all directory permissions with bash like this:

$ bash -c 'IFS=/; for p in $(port file kwm); do path="${path%/}/$p";
paths+=("$path"); done; ls -lad "${paths[@]}"'

Make sure all directories have at least the +x bit set for everyone,
that allows the macports user to reach through.

Rainer