[Nix-dev] NiJS package manager

[Sergey Mironov]

OK, april 1st?

2014-04-01 23:11 GMT+04:00 Sergey Mironov <grrwlf at gmail.com>:
> Hi! Interesting project, but I mostly agree with Colin: asynchronous
> programming is hard and in my opinion wouldn't become a 'killer
> feature'. More, I am sure there are concepts in functional languages
> which will overcome the callback-passing approach of JavaScript. I
> think, Haskell's continuation monad is one of such concepts since it
> allows writing code with callbacks in a plain imperative manner.
>
> From the other side, Nix language has some uniq features which I found
> to be very strong.
>
> First one is recursive records which allows us to 'tie the knot' so
> easily. Various `callPackage' functions use it and it is easy to
> define new custom versions for different needs.
>
> The second one is ' '  ...   ' ' (string notation sugar) with
> anti-quotations. I don't know other languages supporting this thing
> (Haskell is close with it's Template Haskell facilities) and I now
> think it is a must have thing for a package management language. I use
> this notation here and there for writing safer shell scripts and even
> for in-nix C programming. The example [at the end of the letter] may
> looks too complicated but it works flawlessly in Nix. In contrast, I
> think JavaScript wouldn't give me enough flexibility to allow such
> style.
>
> Regards,
> Sergey
>
> --
>
>
> let
>
> mount = "${busybox}/bin/mount";
>
> data_partition = rec {
>     name = "Data";
>     device = "/dev/sda3";
>     mountpoint = "/mnt/${name}";
> };
>
> # Shell script snippet
> with_mounted_partition = p: fn : ''
>     ${mount} ${p.mountpoint}
>     (  ${fn p.mountpoint} )
>     ret=$?
>     ${umount} ${p.mountpoint}
>     (exit $ret)
>   '';
>
>
> # A 'safer' shell script
> installation_script = writeText "install.sh" ''
>     #!${shell}
>
>     #.. a larger script ...
>
>     ${with_mounted_partition data_partition (mp: ''
>         cp bzImage ${mp}/kernel/bzImage
>     '')}
>
>     #.. continue larger script ..
>
>     '';
>
> in
>
> makeIsoImage {
>
>     buildCommand = ''
>      cp ${installation_script} $out
>     '';
>
>   }
>
>
>
>
>
> 2014-04-01 14:11 GMT+04:00 Sander van der Burg - EWI <S.vanderBurg at tudelft.nl>:
>> Hello Nixers,
>>
>> After a year of hard work, I proudly want to present you NiJS: the
>> asynchronous package manager.
>>
>> In NiJS, you can use the more popular, innovating and future proof
>> JavaScript language to specify package build specifications while still
>> having most of the useful goodies that Nix has.
>>
>> Furthermore, because it's asynchronous and I/O events are non-blocking, it's
>> also very fast and highly scalable.
>>
>> More info:
>>
>> http://sandervanderburg.blogspot.com/2014/04/asynchronous-package-management-with.html
>>
>> Best,
>>
>> Sander
>>
>>
>> _______________________________________________
>> nix-dev mailing list
>> nix-dev at lists.science.uu.nl
>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>