Python-ldap: link against openssl lib to add ldaps:// support

[abretaud]

Here's a patch to (hopefully) fix galaxyproject/galaxy#3178
There was no ldaps:// support in the python-ldap wheel as it was not compiled with openssl support.
I also updated to latest versions.
I tested it on my laptop with some dockers and it seems to work, though I have no way to check if there's the same bug on macosx.
Let's see if it builds here

[nsoranzo]

Thanks @abretaud, much appreciated!

[natefoo]

Thanks @abretaud! I was annoyed by the chdir() bug you found when originally adding python-ldap so I fixed it and submitted a PR against your fork for it, abretaud#2.

I also included a reformatting of the prebuild command. Multiline prebuild commands aren't supported but I tested and it's possible to use the yaml folding operator to turn it in to a single line when the yaml is loaded. This should make it a little easier to see changes in the future.

For anyone using folding in the future, the command still has to be a valid one line shell command when folded, e.g. this works:

for foo in $bar; do
    baz &&
    quux; 
done

because it becomes:

for foo in $bar; do baz && quux; done

but this (valid multiline shell script) does not:

for foo in $bar
do
    baz
    quux
done

because it becomes:

for foo in $bar do baz quux done

[abretaud]

Cool, thanks! That's much more readable like this!
Before merging this I'll make more tests as people still have problem with this new wheel in galaxyproject/galaxy#3178
I'll let you know when it's ready

[natefoo]

Ok, thanks!

[abretaud]

Ok, it was a nightmare of library dependencies and compilation, but I think I managed to write a working recipe.
@natefoo the build fails because gnutls is in tar.xz format, should we add support for lzma in starforge code or find a tar.gz/bz2 file somewhere (I couldn't find one though)?

[natefoo]

Yeah, I'll add lzma support.

[natefoo]

Fingers crossed this should build now if you merge abretaud#3 and rebase or merge master.

[abretaud]

Green!
I made a quick test, the wheels works fine for me, but maybe we can wait for some feedback on galaxyproject/galaxy#3178 ?
Is it too late to have it in galaxy 17.09?

[nsoranzo]

Is it too late to have it in galaxy 17.09?

I think that not having SSL support for LDAP can be considered a bug and would approve a PR targeting 17.09.

[natefoo]

I agree with @nsoranzo regarding it being a bug.

[abretaud]

Looks like we're ready to merge finally :)

[natefoo]

Ok, they are uploaded to wheels.galaxyproject.org. Thanks for all your work (and patience) on this @abretaud!