root@srv01:/usr/lib/letsencrypt# ./letsencrypt-auto
Bootstrapping dependencies for Debian-based OSes...
Hit http://security.debian.org wheezy/updates Release.gpg
Hit http://security.debian.org wheezy/updates Release
Hit http://security.debian.org wheezy/updates/main Sources
Hit http://security.debian.org wheezy/updates/contrib Sources
Hit http://security.debian.org wheezy/updates/main amd64 Packages
Hit http://security.debian.org wheezy/updates/contrib amd64 Packages
Hit http://ftp.at.debian.org wheezy Release.gpg
Hit http://security.debian.org wheezy/updates/contrib Translation-en
Hit http://ftp.at.debian.org wheezy-updates Release.gpg
Hit http://security.debian.org wheezy/updates/main Translation-en
Hit http://ftp.at.debian.org wheezy Release
Hit http://ftp.at.debian.org wheezy-updates Release
Hit http://ftp.at.debian.org wheezy/main Sources
Hit http://ftp.at.debian.org wheezy/main amd64 Packages
Hit http://ftp.at.debian.org wheezy/main Translation-en
Hit http://ftp.at.debian.org wheezy-updates/main Sources
Hit http://ftp.at.debian.org wheezy-updates/contrib Sources
Hit http://ftp.at.debian.org wheezy-updates/main amd64 Packages/DiffIndex
Hit http://ftp.at.debian.org wheezy-updates/contrib amd64 Packages
Hit http://ftp.at.debian.org wheezy-updates/contrib Translation-en
Hit http://ftp.at.debian.org wheezy-updates/main Translation-en
Reading package lists... Done
E: No packages found
Reading package lists... Done
Building dependency tree
Reading state information... Done
libaugeas0 is already the newest version.
ca-certificates is already the newest version.
dialog is already the newest version.
gcc is already the newest version.
git is already the newest version.
libffi-dev is already the newest version.
python is already the newest version.
python-dev is already the newest version.
python-virtualenv is already the newest version.
libssl-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
Creating virtual environment...
Updating letsencrypt and virtual environment dependencies...../root/.local/share/letsencrypt/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
./root/.local/share/letsencrypt/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
.
Running with virtualenv: /root/.local/share/letsencrypt/bin/letsencrypt
No installers seem to be present and working on your system; fix that or try running letsencrypt with the "certonly" command