ackmate: hardcode full path to the perl interpreter

[mojca (Mojca Miklavec)]

The file

/Applications/MacPorts/AckMate.tmplugin/Contents/Resources/ackmate_ack

from ackmate should be fixed to use the same version of Perl as ack uses.

[mojca (Mojca Miklavec)]

I submitted a patch in r142097, but it doesn't automatically use the correct version of Perl. Ideally we should be able to get rid of specifying any version of Perl in that port and simply check which version of perl is used by ack.

[ryandesign (Ryan Carsten Schmidt)]

That would make ackmate not build reproducibly. If ackmate (and ack) want to offer the option of building against different versions of perl, they must do so using variants.

[danielluke (Daniel J. Luke)]

This would also be fixed by just having one version of perl5 (the current upstream stable release).

[dbevans (David B. Evans)]

As of r142181, ack builds using perl5.22 only, no variants. So just need to configure ackmate to use perl5.22.

It appears to me that ackmate invokes ackmate_ack programmatically in source/controllers/JPAckTypesProcess.m as follows:

- (void)invokeWithPath:(NSString*)path options:(NSArray*)options
{
  ackState = ackInitial;

  self.ackTask = [[[NSTask alloc] init] autorelease];

  NSString* ackmateAck = [[[NSBundle bundleForClass:self.class] resourcePath] stringByAppendingPathComponent:@"ackmate_ack"];

  [self.ackTask setCurrentDirectoryPath:path];

  [self.ackTask setLaunchPath:@"/usr/bin/env"];
  NSMutableArray* args = [NSMutableArray arrayWithObjects:@"perl", ackmateAck, nil];

so this needs to be patched something like

  [self.ackTask setLaunchPath:@"/opt/local/bin/perl5.22"];
  NSMutableArray* args = [NSMutableArray arrayWithObjects:ackmateAck, nil];

Because of this, the shebang in ackmate_ack is probably irrelevant.

I can't test this hypothesis because ackmate fails during build for me on Yosemite. See attached main.log.

[dbevans (David B. Evans)]

Build log showing build failure on Yosemite

[dbevans (David B. Evans)]

Note also that the way this app is constructed (not a typical perl build), you don't need to use the perl5 PortGroup and associated variables. Just add a dependency on perl5.22.