On Tue, Apr 28, 2015 at 11:12 AM Herbert Valerio Riedel
On 2015-04-28 at 06:08:38 +0200, Michael Snoyman wrote:
[...]
I offered Duncan last week that I'd port cabal-install over to http-client/http-client-tls to add SSL support. That offer still stands.
I did a quick check trying to find out the additional dependencies (relative to what 'cabal-install' currently depends on) http-client-tls would pull in (it seems http-client and tls each roughly account for half the ~50 deps below):
async-2.0.2 base64-bytestring-1.0.0.1 blaze-builder-0.4.0.1 byteable-0.1.1 cereal-0.4.1.1 clock-0.4.5.0 cryptohash-0.11.6 data-default-class-0.0.1 data-default-instances-base-0.0.1 data-default-instances-containers-0.0.1 data-default-instances-old-locale-0.0.1 dlist-0.7.1.1 data-default-instances-dlist-0.0.1 data-default-0.5.3 cookie-0.4.1.4 hashable-1.2.3.2 case-insensitive-1.2.0.4 hourglass-0.2.9 asn1-types-0.3.0 asn1-encoding-0.9.0 asn1-parse-0.9.0 crypto-pubkey-types-0.4.3 http-types-0.8.6 mime-types-0.1.0.6 pem-0.2.2 primitive-0.6 securemem-0.1.7 crypto-cipher-types-0.0.9 cipher-aes-0.2.10 cipher-des-0.0.6 cipher-rc4-0.1.4 socks-0.5.4 streaming-commons-0.1.12 transformers-compat-0.4.0.4 exceptions-0.8.0.2 utf8-string-1 publicsuffixlist-0.1 http-client-0.4.11.1 vector-0.10.12.3 crypto-random-0.0.9 crypto-numbers-0.2.7 crypto-pubkey-0.2.8 x509-1.5.0.1 x509-store-1.5.0 x509-system-1.5.0 x509-validation-1.5.1 tls-1.2.17 connection-0.2.4 http-client-tls-0.2.2
In contrast, I was surprised to see, that extending the HTTP package (or maybe just writing a 'HTTPS'-companion package) to use HsOpenSSL seems to pull in 'HsOpenSSL' as the only additional package...
For comparision here's what http-streams (which I'm not suggesting right now, as I think going the 'HTTP'+'HsOpenSSL'-route would be better currently) would pull in (which could have a few deps less if it didn't pull in 'aeson'...):
HsOpenSSL-0.11.1.1 base64-bytestring-1.0.0.1 blaze-builder-0.4.0.1 bytestring-builder-0.10.6.0.0 dlist-0.7.1.1 hashable-1.2.3.2 case-insensitive-1.2.0.4 primitive-0.6 scientific-0.3.3.8 attoparsec-0.12.1.6 syb-0.4.4 unordered-containers-0.2.5.1 http-common-0.8.2.0 vector-0.10.12.3 aeson-0.8.0.2 zlib-bindings-0.1.1.5 io-streams-1.3.0.0 openssl-streams-1.2.1.0 http-streams-0.8.3.1
Cheers, hvr
I have no intention of playing the "minimal dependency" game (though I don't mind dropping data-default, which accounts for 6 of the dependencies listed there). I will point out- as Gershom already did- that in many cases it's likely easier to install a few extra Haskell packages than it is to pull in OpenSSL as a dependency, especially on Windows. (And that's ignoring the fact that http-client-openssl exists.) As a historical point of interest, I originally wrote http-client (or, as it was called at the time, http-enumerator) because I was trying to add OpenID support to an application, and the openid package[1] had done exactly what you've described: add HsOpenSSL to the HTTP package. I could never get a single connection to work with that combination. But maybe a brand new approach at writing that code will work. Michael [1] http://hackage.haskell.org/package/openid