Control: tags -1 patch Not a perfect solution but sufficient for stretch is the patch below to use OpenSSL 1.0.2
The "| libssl-dev (<< 1.1.0~)" is added for backports. --- debian/control.old 2016-11-25 13:50:10.000000000 +0000 +++ debian/control 2016-11-25 13:50:17.000000000 +0000 @@ -11,7 +11,7 @@ # Protocols libgadu-dev, libexpat1-dev, # Encryption - libssl-dev, libgnutls28-dev, libgpgme11-dev, + libssl1.0-dev | libssl-dev (<< 1.1.0~), libgnutls28-dev, libgpgme11-dev, # Other zlib1g-dev, libsqlite3-dev, libglib2.0-dev, # Documentation cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed