Yes.

I notice that after building Nemo it is in a directory called nemo, not
Nemo.

At the moment Nemo.jl simply builds Nemo by including deps/build.jl, since
this is what Cairo does.

The code the user will be interested in is in Rings.jl and Fields.jl. How
do they load those?

Bill.

On 12 September 2014 01:08, Leah Hanson <[email protected]> wrote:

> Does your Nemo.jl contain
>
> ~~~
> module Nemo
> <code goes here...>
> end
> ~~~
>
> ?
>
> On Thu, Sep 11, 2014 at 5:56 PM, Bill Hart <[email protected]>
> wrote:
>
>> OK, I can build Nemo. But how do I load modules from Nemo now that it is
>> installed and built.
>>
>> For example "using Nemo", "using Rings", "using Fields" all fail,
>> complaining that it can't find the modules.
>>
>> I must be missing a step somewhere.
>>
>> Bill.
>>
>> On 12 September 2014 00:47, Bill Hart <[email protected]>
>> wrote:
>>
>>> It's ok, I got it. Pkg.build()
>>>
>>> Bill.
>>>
>>> On 12 September 2014 00:38, Bill Hart <[email protected]>
>>> wrote:
>>>
>>>> I had a go at making a preliminary package which should vaguely build
>>>> on Linux when "using Nemo" is run from within the src/ directory.
>>>>
>>>> I checked this works on my machine at least.
>>>>
>>>> I also checked that Pkg.clone("https://github.com/wbhart/nemo.git";)
>>>> clones the Nemo repository from within Julia. But this seems to only clone
>>>> the repository and doesn't appear to issue "using Nemo" as I had expected.
>>>>
>>>> Also typing "using Nemo" manually says that it can't find Nemo. What
>>>> command to users have to issue to get "using Nemo" to actually do 
>>>> something?
>>>>
>>>> Bill.
>>>>
>>>>
>>>>
>>>> On 10 September 2014 16:26, Isaiah Norton <[email protected]>
>>>> wrote:
>>>>
>>>>>
>>>>> This was what I thought of trying first. But I couldn't figure out how
>>>>>> it worked out what GitHub repository to associate this with, or whether 
>>>>>> it
>>>>>> would try to create one, possibly scrubbing my existing nemo repository 
>>>>>> on
>>>>>> GitHub. Obviously I don't want to lose my commit history.
>>>>>
>>>>>
>>>>> For Pkg manager purposes, the association will be created later (when
>>>>> you register the package).
>>>>>
>>>>> It also isn't clear where Julia creates the empty git repository. In
>>>>>> the current directory? Or in some subdirectory of the Julia source tree?
>>>>>
>>>>>
>>>>> Under `$HOME/.julia/v0.3` (or v0.4 if you are on git master)
>>>>>
>>>>> For the most part I can just run configure, make, make install for now
>>>>>> and set some library paths (if I can figure out what kind of system I am
>>>>>> on).
>>>>>
>>>>>
>>>>> There are some macros to help with this: @osx, @linux, @unix (both),
>>>>> and @windows. There is also a variable called OS_NAME with a
>>>>> platform-specific value (:Windows, :Linux, etc.) See:
>>>>>
>>>>> http://docs.julialang.org/en/release-0.3/manual/calling-c-and-fortran-code/#handling-platform-variations
>>>>>
>>>>>
>>>>>
>>>>> On Wed, Sep 10, 2014 at 10:18 AM, Bill Hart <
>>>>> [email protected]> wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>> On Wednesday, 10 September 2014 15:57:56 UTC+2, Isaiah wrote:
>>>>>>>
>>>>>>> Is there documentation somewhere explaining how to do the latter? Or
>>>>>>>> can someone help me with doing the latter?
>>>>>>>
>>>>>>>
>>>>>>> You could run `Pkg.generate("Nemo")` and then copy and commit (some
>>>>>>> of) the resulting files in your own Nemo git tree; there aren't very 
>>>>>>> many.
>>>>>>>
>>>>>>
>>>>>> This was what I thought of trying first. But I couldn't figure out
>>>>>> how it worked out what GitHub repository to associate this with, or 
>>>>>> whether
>>>>>> it would try to create one, possibly scrubbing my existing nemo 
>>>>>> repository
>>>>>> on GitHub. Obviously I don't want to lose my commit history.
>>>>>>
>>>>>> It also isn't clear where Julia creates the empty git repository. In
>>>>>> the current directory? Or in some subdirectory of the Julia source tree?
>>>>>>
>>>>>>
>>>>>>> I can't find any documentation explaining where to put the commands
>>>>>>>> in a Pkg to actually git clone flint, build it, install it and set up 
>>>>>>>> paths
>>>>>>>> for Nemo. Given the complexities of installing flint for the user, I'd 
>>>>>>>> like
>>>>>>>> to have the Julia package manager do this automatically if at all 
>>>>>>>> possible.
>>>>>>>> And I see it does seem to be possible. I just can't figure out how.
>>>>>>>>
>>>>>>>
>>>>>>> The Pkg manager will look for a file called `MYPKG/deps/build.jl`
>>>>>>> and run that if it exists. That's just a Julia file, so you can do 
>>>>>>> whatever
>>>>>>> you want there (shell out, etc.).
>>>>>>>
>>>>>>
>>>>>> Perfect. For the most part I can just run configure, make, make
>>>>>> install for now and set some library paths (if I can figure out what kind
>>>>>> of system I am on).
>>>>>>
>>>>>> Finding the Julia installation on the system in order to link against
>>>>>> the gmp/mpfr might be slightly more difficult.
>>>>>>
>>>>>>
>>>>>>> One option is to use the BinDeps package which provides primitives
>>>>>>> for interacting with various package managers and build systems:
>>>>>>>
>>>>>>> https://github.com/JuliaLang/BinDeps.jl
>>>>>>>
>>>>>>> A very advanced and fully-developed usage example can be found in
>>>>>>> the Cairo package, which has Autotools, Apt, Yum, and several other 
>>>>>>> targets:
>>>>>>>
>>>>>>> https://github.com/JuliaLang/Cairo.jl/blob/master/deps/build.jl
>>>>>>>
>>>>>>> There are a number of other examples to draw from. Hopefully the
>>>>>>> above links will give you a sense of where to start. I can help out on
>>>>>>> Linux and Windows (@ihnorton on github).
>>>>>>>
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>> Bill.
>>>>>>
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Sep 10, 2014 at 9:31 AM, Bill Hart <[email protected]
>>>>>>> > wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I have been writing a new Julia package, which I have called Nemo
>>>>>>>> (it's essentially a limited computer algebra system).
>>>>>>>>
>>>>>>>> I have two specific problems:
>>>>>>>>
>>>>>>>> 1) The git and GitHub repository for Nemo already exists, but I
>>>>>>>> haven't created a Julia Pkg yet.
>>>>>>>>
>>>>>>>> https://github.com/wbhart/nemo
>>>>>>>>
>>>>>>>> The documentation on creating a Julia Pkg seems to assume you are
>>>>>>>> going to start with the Pkg then commit code to the git repository 
>>>>>>>> that it
>>>>>>>> creates, not create a git/github project and then add the necessary 
>>>>>>>> stuff
>>>>>>>> to turn it into a Julia package.
>>>>>>>>
>>>>>>>> Is there documentation somewhere explaining how to do the latter?
>>>>>>>> Or can someone help me with doing the latter?
>>>>>>>>
>>>>>>>> (I have a couple of small build issues to fix in order for flint to
>>>>>>>> work on Windows 64 before it will work there. But I will be working on
>>>>>>>> those right away. I have managed to get it to work with Julia there, 
>>>>>>>> just
>>>>>>>> not hacked the fixes into the flint build system yet. Other than this 
>>>>>>>> minor
>>>>>>>> thing, I am quite ready to publish Nemo as a package right away (well,
>>>>>>>> apart from a horrible 3x slowdown and excessive memory usage caused by 
>>>>>>>> gc,
>>>>>>>> but I think I've given up on solving that problem for now).)
>>>>>>>>
>>>>>>>> 2) Nemo relies on mpir (or GMP), mpfr and flint, which are large
>>>>>>>> external C/assembly libraries which need to get built or be available 
>>>>>>>> to
>>>>>>>> run Nemo. I understand Julia has its own GMP and MPFR which I can 
>>>>>>>> probably
>>>>>>>> link to if they are recent enough.
>>>>>>>>
>>>>>>>> Flint needs to be built when the package is installed. It takes a
>>>>>>>> long time to build, e.g. 40 minutes or so on Windows, maybe a third of 
>>>>>>>> that
>>>>>>>> on Linux.
>>>>>>>>
>>>>>>>> I can't find any documentation explaining where to put the commands
>>>>>>>> in a Pkg to actually git clone flint, build it, install it and set up 
>>>>>>>> paths
>>>>>>>> for Nemo. Given the complexities of installing flint for the user, I'd 
>>>>>>>> like
>>>>>>>> to have the Julia package manager do this automatically if at all 
>>>>>>>> possible.
>>>>>>>> And I see it does seem to be possible. I just can't figure out how.
>>>>>>>>
>>>>>>>> Flint is here:
>>>>>>>>
>>>>>>>> https://github.com/wbhart/flint2
>>>>>>>>
>>>>>>>> Can anyone help, or point me in the right direction?
>>>>>>>>
>>>>>>>> Bill.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>>
>>>
>>
>

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