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Today's Topics:
1. Re: command-line interaction with running process (Elise Huard)
2. Re: command-line interaction with running process
(emacstheviking)
3. Re: LTS is good but... (emacstheviking)
----------------------------------------------------------------------
Message: 1
Date: Wed, 4 Mar 2015 10:58:26 +0100
From: Elise Huard <[email protected]>
To: [email protected], The Haskell-Beginners Mailing
List - Discussion of primarily beginner-level topics related to
Haskell <[email protected]>
Subject: Re: [Haskell-beginners] command-line interaction with running
process
Message-ID:
<cahfycqk_3fpy_7yz46ytb5bkajb4ob6tv5j+r5s5ic2kt7u...@mail.gmail.com>
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Thanks for this answer - that's a good point.
At this point it's mostly for (interactive) game/level design and
testing though :)
On 4 March 2015 at 10:45, Sumit Sahrawat, Maths & Computing, IIT (BHU)
<[email protected]> wrote:
> If you decice upon the server-client architecture, you should take a look at
> zeromq.
> It is used extensively in IHaskell, so you can peek at the code there for a
> working example.
>
> Also, I believe a client-server architecture will be better as I personally
> enjoy games a lot more when they are multi-player.
> It makes the conversion from single-player to multi-player a non-destructive
> (or atleast less destructive) process.
>
> On 4 March 2015 at 15:02, Elise Huard <[email protected]> wrote:
>>
>> Hi,
>>
>> I'm trying to do the following: implementing a command-line interface
>> to directly interact with the state or the parameters of a
>> looping/running process (a game, to be specific).
>>
>> My first thought is to fork a thread, passing in a TChan/TVar or
>> similar to enable communication, and to have the command-line
>> interface on the thread (getLine or haskelline ...).
>> Another option would be to have a bona fide server-client interface
>> (with sockets or others), to fork a thread again to run the server and
>> to connect using the client library - which would allow me to use ghci
>> and have transparent serialization under the hood.
>>
>> Are there known use cases? Am I missing something, for instance is it
>> possible to interact with a running process directly using ghci?
>> Any tips?
>>
>> Thank you,
>>
>> Elise
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
>
>
>
> --
> Regards
>
> Sumit Sahrawat
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
------------------------------
Message: 2
Date: Wed, 4 Mar 2015 10:44:45 +0000
From: emacstheviking <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] command-line interaction with running
process
Message-ID:
<caeieuuku1w1gm87xapguncoakdzx-nd2g7pd7vkp+0u5oja...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I did something similar a while back using a socket based "terminal
session" into an OpenGL program so I could change things as it ran.
It's viable. I used TVar I think and didn't encounter any issues.
Sadly, the code has vanished but it worked well and wasn't that much code
actually thanks to the libraries being good.
On 4 March 2015 at 09:32, Elise Huard <[email protected]> wrote:
> Hi,
>
> I'm trying to do the following: implementing a command-line interface
> to directly interact with the state or the parameters of a
> looping/running process (a game, to be specific).
>
> My first thought is to fork a thread, passing in a TChan/TVar or
> similar to enable communication, and to have the command-line
> interface on the thread (getLine or haskelline ...).
> Another option would be to have a bona fide server-client interface
> (with sockets or others), to fork a thread again to run the server and
> to connect using the client library - which would allow me to use ghci
> and have transparent serialization under the hood.
>
> Are there known use cases? Am I missing something, for instance is it
> possible to interact with a running process directly using ghci?
> Any tips?
>
> Thank you,
>
> Elise
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
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Message: 3
Date: Wed, 4 Mar 2015 10:45:39 +0000
From: emacstheviking <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] LTS is good but...
Message-ID:
<caeieuu+ekyg_w9amhysj6tfgx-ak9k2qpnr9fv0kcvxzmgf...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I am a 30+ years hacker Boris, building from source might just tempt me
still!! HAHAHA
My machine is now "clean" so I will decide how to play it!
Thanks again everybody.
On 4 March 2015 at 09:31, Boris <[email protected]> wrote:
> Hey,
>
> Little addition to what Michael already sent you.
>
> To get ?the latest? you should build from sources :D
>
> But in case it?s ok for you to have ghc 7.8.3 and you don?t want to
> ./configure;
> make; make install, you might also check this installation script on
> github <https://github.com/yogsototh/install-haskell>.
>
>
>
> On March 4, 2015 at 11:28:50, Michael Snoyman ([email protected]) wrote:
>
> I'd recommend looking at:
>
> http://www.stackage.org/install#mac-os-x
> https://github.com/bitemyapp/learnhaskell/blob/master/README.md#mac-os-x
>
> I don't generally recommend using the platform installer, it ends up
> pegging libraries to old versions which causes dependency problems, or in
> some cases have known bugs.
>
> On Wed, Mar 4, 2015 at 11:26 AM emacstheviking <[email protected]> wrote:
>
>> Agreed Michael!
>>
>> I am currently wiping all Mac Ports packages and I will perform a clean
>> up of /Library/Haskell etc.
>>
>> What is the *preferred* way to get the lastest for OSX: Using homebrew,
>> macports or the Haskell Platform. I *used* to use the platform installer
>> but for some reason (cabal I expect!) I started trying out other ways...
>>
>> I think actually I will go the platform packager again...
>>
>> On 4 March 2015 at 09:13, Michael Snoyman <[email protected]> wrote:
>>
>>> I can't really explain the details of what's going on here. It seems
>>> that in some cases different versions of the executables are being found,
>>> but I don't know why. Wiping out your sandbox (cabal sandbox delete) and
>>> starting over may be sufficient to recover.
>>>
>>> On Wed, Mar 4, 2015 at 11:11 AM emacstheviking <[email protected]>
>>> wrote:
>>>
>>>> As requested,
>>>>
>>>> iMac:~ vosabristol$ ghc --version
>>>> The Glorious Glasgow Haskell Compilation System, version 7.8.3
>>>>
>>>> which ghc
>>>> /opt/local/bin/ghc
>>>>
>>>> Hmm.... it shows a macports instsallation of GHC... but I am sure
>>>> that's how I git it... I *used* to use the OSX installation package but I
>>>> thought a clean start using MacPorts would somehow change the mood...
>>>>
>>>> iMac:~ vosabristol$ cabal --version
>>>> cabal-install version 1.16.0.2
>>>> using version 1.16.0 of the Cabal library
>>>>
>>>> iMac:~ vosabristol$ which cabal
>>>> /usr/bin/cabal
>>>>
>>>> So... there is a possible case for *once again* performing a complete
>>>> and utter removal of Haskell and its partners in crime and doing a fresh
>>>> installation?
>>>>
>>>>
>>>> Out of frustration I built OCaml and OPAM from sources last night but
>>>> I'd still like to go with GHC!
>>>>
>>>> :)
>>>>
>>>>
>>>> On 3 March 2015 at 20:43, Michael Snoyman <[email protected]> wrote:
>>>>
>>>>> Funny that there's an issue being discussed in the cabal issue tracker
>>>>> right now[1] similar to this. But the report you're giving here is
>>>>> particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which
>>>>> is supported by the claim that base 4.7 isn't available. I'd recommend
>>>>> starting off with running the following commands and pasting the output:
>>>>>
>>>>> ghc --version
>>>>> which ghc
>>>>> cabal --version
>>>>> which cabal
>>>>>
>>>>> [1] https://github.com/haskell/cabal/issues/2438
>>>>>
>>>>> On Tue, Mar 3, 2015 at 10:21 PM emacstheviking <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> Forgot to add that somehow, despite the upgrade, my cabal version
>>>>>> has gone backwards from 1.20.0.1 to 1.16.0
>>>>>>
>>>>>> WTF?
>>>>>>
>>>>>>
>>>>>> On 3 March 2015 at 20:19, emacstheviking <[email protected]> wrote:
>>>>>>
>>>>>>> I started an OpenGL project within an LTS sandbox as guided on
>>>>>>> another post and, somewhat foolishly it would see, I did a "cabal
>>>>>>> install
>>>>>>> cabal-install" when prompted that a new version was available.
>>>>>>>
>>>>>>> The very next time I tried to work on my code.... I got this:
>>>>>>>
>>>>>>> bash-3.2$ pwd
>>>>>>> /Users/seancharles/Documents/Coding/haskell/lts1
>>>>>>> bash-3.2$ cabal build
>>>>>>> cabal: You need to re-run the 'configure' command. The version of
>>>>>>> Cabal being
>>>>>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>>>>>> bash-3.2$ cabal configure
>>>>>>> Resolving dependencies...
>>>>>>> Configuring lts1-0.1.0.0...
>>>>>>> cabal: At least the following dependencies are missing:
>>>>>>> base ==4.7.*
>>>>>>> bash-3.2$ cabal build
>>>>>>> cabal: You need to re-run the 'configure' command. The version of
>>>>>>> Cabal being
>>>>>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>>>>>> bash-3.2$ ls -l
>>>>>>> total 112
>>>>>>> -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE
>>>>>>> -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs
>>>>>>> -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~
>>>>>>> -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs
>>>>>>> -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config
>>>>>>> -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51
>>>>>>> cabal.sandbox.config
>>>>>>> drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist
>>>>>>> -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal
>>>>>>> bash-3.2$
>>>>>>>
>>>>>>> So, welcome to a different kind of hell, "cabal version hell"
>>>>>>> perhaps?
>>>>>>>
>>>>>>> Can anybody help me get it running again?
>>>>>>> Thanks.
>>>>>>> Sean.
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
>>>>>> Beginners mailing list
>>>>>> [email protected]
>>>>>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Beginners mailing list
>>>>> [email protected]
>>>>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>>>>
>>>>>
>>>> _______________________________________________
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>>>>
>>>
>>> _______________________________________________
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>>>
>> _______________________________________________
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