Comment 3 for bug 1371201

export SSL_CERT_DIR=/etc/ssl/certs has been helpful.

Now, "pipelight-plugin --update" leads to:

--2014-09-20 09:24:52-- https://bitbucket.org/mmueller2012/pipelight/raw/master/share/install-dependency.sig
Resolving bitbucket.org (bitbucket.org)... 131.103.20.168, 131.103.20.167
Connecting to bitbucket.org (bitbucket.org)|131.103.20.168|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 9609 (9.4K) [application/pgp-signature]
Saving to: ‘/tmp/tmp.WeljfL54h5’

100%[============================================================================================================>] 9,609 --.-K/s in 0s

2014-09-20 09:24:52 (280 MB/s) - ‘/tmp/tmp.WeljfL54h5’ saved [9609/9609]

gpg: Signature made Thu 11 Sep 2014 10:19:57 PM CEST using RSA key ID 1C3B0533
gpg: Good signature from "Pipelight Dev Team <email address hidden>"
**************************************************************************
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: 3978 8ABB 0402 FC31 D4FB 22AA 0B6B 817C 1C3B 0533
**************************************************************************