[web-devel] Yesod beginner

Fri Jun 17 02:35:57 CEST 2011

My opinion is tainted by hindsight now, but the "five minutes" page as 
is now would probably be sufficient :) I guess it really depends on the 
target demographic (experienced programmers or total newbies, et al). I 
would love to see more use of Haskell as the first "learn to program" 
language (going on a tangent here, sorry).

On 06/16/2011 10:47 AM, Greg Weber wrote:
> I updated the install page with notes for these issues: 
> http://www.yesodweb.com/page/five-minutes
> Let us know if you think that would have solved your problems. If not, 
> we can link to a more in depth wiki page.
>
> I believe Neil said the HaskellNet package wasn't compiling on ghc7 
> but that it shouldn't be hard to fix and that he might do it. This 
> package should allow you to send email on Windows.
>
> Greg Weber
>
> On Thu, Jun 16, 2011 at 7:34 AM, Michael Snoyman <michael at snoyman.com 
> <mailto:michael at snoyman.com>> wrote:
>
>     Can you add a Wiki page[1] with your install experiences? I'll link to
>     it from the "five minutes" page.
>
>     As for the sendmail issue: I'm actually going to need a backend for
>     Amazon SES for sending email, so I'd like to get that written. (Any
>     volunteers? Aristid already has a great aws package that should do
>     most of the heavy lifting.[2]) There's also haskellnet which uses
>     SMTP, but I haven't used it.
>
>     Michael
>
>     [1] http://www.yesodweb.com/page/wiki
>     [2] http://hackage.haskell.org/package/aws
>
>     On Thu, Jun 16, 2011 at 5:23 PM, anthropornis
>     <anthropornis at gmail.com <mailto:anthropornis at gmail.com>> wrote:
>     > (I forgot to mention earlier, I'm also new to Haskell, sorta
>     starting with
>     > Yesod first to just get something running, then going on to learning
>     > Haskell, so I can get rid of a PHP CRUD interface for an
>     existing db.)
>     >
>     > I tried cabal install without any flags and it eventually worked.
>     >
>     > Initially cabal yielded this error:
>     >    cabal: Error: some packages failed to install:
>     >    HDBC-postgresql-2.2.3.3 failed during the configure step. The
>     exception
>     > was:
>     >    ExitFailure 1
>     >    persistent-postgresql-0.5.0 depends on
>     HDBC-postgresql-2.2.3.3 which
>     > failed to install.
>     >    sample-0.0.0 depends on HDBC-postgresql-2.2.3.3 which failed
>     to install.
>     >
>     >
>     > Reading further up in the terminal output I saw something
>     mentioned about
>     > one package needing to be installed for server side extensions,
>     or libpq-dev
>     > needing to be installed for client side applications.
>     >
>     > I took a chance that libpq-dev would be the right choice and
>     installed it,
>     > then ran cabal install again, and this time it worked, and I was
>     able to
>     > launch the dev server.
>     >
>     > Viewing the page in my web browser I attempted to add an email
>     login, but
>     > nothing happened. Switching back to the terminal it said
>     sendmail needed to
>     > be installed. After installing sendmail I was able to create a
>     login.
>     >
>     > I had one question about sendmail. I noted somewhere else in
>     your docs that
>     > I could possibly do something like Adobe AIR (?) and make an
>     executable with
>     > Webkit in it as an offline version of the web app (which would
>     be really
>     > cool, by the way).  I wasn't sure, if I put that executable on
>     someone's
>     > Windows machine, is sendmail available for Windows or can the
>     email pieces
>     > be switched with something other than sendmail if needed?
>     >
>     > Thanks again
>     >
>     >
>     > On 06/15/2011 10:52 PM, Michael Snoyman wrote:
>     >>
>     >> On Thu, Jun 16, 2011 at 12:46 AM,
>     anthropornis<anthropornis at gmail.com <mailto:anthropornis at gmail.com>>
>     >>  wrote:
>     >>>
>     >>> Hello,
>     >>>
>     >>> I was following the "Yesod in Five Minutes Instructions" and I
>     had a
>     >>> couple
>     >>> of bumps in the road.
>     >>>
>     >>> The first one was when trying to do step 6, I get the
>     following terminal
>     >>> output:
>     >>>    unrecognized option `--only-dependencies'
>     >>>
>     >>> After ignoring that for the moment, I proceeded to trying to
>     run the
>     >>> devel
>     >>> server and I get this terminal output:
>     >>>    yesod: user error (At least the following dependencies are
>     missing:
>     >>>    persistent-postgresql ==0.5.*)
>     >>>
>     >>> I'm guessing the second error may be related to the first, maybe
>     >>> persistent-postgresql was one of those dependencies that was
>     supposed to
>     >>> be
>     >>> installed?
>     >>>
>     >>> I did create the Postgres databases and user specified in the
>     Yesod app
>     >>> config file.
>     >>>
>     >>> I'm using this PPA on Ubuntu 11.04 64-bit, as the repo version
>     of the
>     >>> Haskell Platform seems to be broken:
>     >>> https://launchpad.net/~brcha/+archive/ppa
>     <https://launchpad.net/%7Ebrcha/+archive/ppa>
>     >>>
>     >>> Thanks for any insight.
>     >>>
>     >> Try just plain "cabal install", the "--only-dependencies" is
>     available
>     >> in newer versions of the "cabal" tool. I'm going to remove it
>     from the
>     >> docs.
>     >>
>     >> Michael
>     >
>     >
>
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