[sage-devel] Error while building Sage

[hy15]

Hi,
  I am installing sage's developer version. After extracting  
sage-8.6.tar.gz and then ran  make file. Following Error occured after one 
hour of build:
Copying package files from temporary location 
/home/hrishabh/Documents/Sage/sage-8.6/var/tmp/sage/build/gfortran-7.2.0/inst 
to /home/hrishabh/Documents/Sage/sage-8.6
cp: cannot overwrite non-directory 
'/home/hrishabh/Documents/Sage/sage-8.6/./lib64' with directory 
'/home/hrishabh/Documents/Sage/sage-8.6/var/tmp/sage/build/gfortran-7.2.0/inst/home/hrishabh/Documents/Sage/sage-8.6/./lib64'
My os is ubuntu.
I am unable to share log file as it is more that 25 MB.
Can someone Help me solve this problem.
Thank you,

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[sage-devel] Enhancement of Kruskal Algorithmn

[hy15]

Hello guys,
I would like implement an enhancement of kruskal algorithm as provided 
in this paper http://algo2.iti.kit.edu/documents/fkruskal.pdf. 

This Algorithm gives an expected complexity of  O(E + Vlog(v)*log(E/V) 
where E is number of edges and V be number of edges. This Algorithm works 
quite well for large and dense graph. After seeing source code of MST, the 
code had a TODO task under 
 kruskal function. Any suggestions ?

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[sage-devel] Re: Enhancement of Kruskal Algorithmn

[hy15]

 Is there a way to generate Random directed weighted Graph, I have read the 
module for Random Graph generator but couldn't find one for weighted.
Is there a program to generate Random directed weighted Graph there ?


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[sage-devel] Re: Enhancement of Kruskal Algorithmn

[hy15]

I have implemented the algorithm and created a ticket #27482. After 
committing, The patchbot is showing that some tests failed and i am unable 
to understand the actual error. Link to the ticket is 
:https://trac.sagemath.org/ticket/27482

On Tuesday, March 12, 2019 at 1:02:48 PM UTC+5:30, david@inria.fr wrote:
>
> Given a (di)graph, you can easily assign random edge weights using for 
> instance `G.set_edge_lable(u, v, randint(1, 100))`.
>
> Le lundi 11 mars 2019 17:53:05 UTC+1, hy...@iitbbs.ac.in a écrit :
>>
>>  Is there a way to generate Random directed weighted Graph, I have read 
>> the module for Random Graph generator but couldn't find one for weighted.
>> Is there a program to generate Random directed weighted Graph there ?
>>
>>
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[sage-devel] libSingular not found

[hy15]

I want to build the documentation of my branch, but running sage --docbuild 
html gives following error:-
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 163, in _run_module_as_main
mod_name, _Error)
  File "/usr/lib/python2.7/runpy.py", line 111, in _get_module_details
__import__(mod_name)  # Do not catch exceptions initializing package
  File "/usr/lib/python2.7/dist-packages/sage_setup/docbuild/__init__.py", 
line 24, in 
import sage.all
  File "/usr/lib/python2.7/dist-packages/sage/all.py", line 71, in 
from sage.env import SAGE_ROOT, SAGE_SRC, SAGE_DOC_SRC, SAGE_LOCAL, 
DOT_SAGE, SAGE_ENV
  File "/usr/lib/python2.7/dist-packages/sage/env.py", line 187, in 
"libSingular not found--a working Singular install in $SAGE_LOCAL "
RuntimeError: libSingular not found--a working Singular install in 
$SAGE_LOCAL is required for Sage to work

What should I do?  

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Re: [sage-devel] libSingular not found

[hy15]

I am trying to build a development branch of sage related to this ticket 
(27482) 

On Wednesday, April 10, 2019 at 5:45:55 PM UTC+5:30, E. Madison Bray wrote:
>
> On Wed, Apr 10, 2019 at 1:25 PM > wrote: 
> > 
> > I want to build the documentation of my branch, but running sage 
> --docbuild html gives following error:- 
> > Traceback (most recent call last): 
> >   File "/usr/lib/python2.7/runpy.py", line 163, in _run_module_as_main 
> > mod_name, _Error) 
> >   File "/usr/lib/python2.7/runpy.py", line 111, in _get_module_details 
> > __import__(mod_name)  # Do not catch exceptions initializing package 
> >   File 
> "/usr/lib/python2.7/dist-packages/sage_setup/docbuild/__init__.py", line 
> 24, in  
> > import sage.all 
> >   File "/usr/lib/python2.7/dist-packages/sage/all.py", line 71, in 
>  
> > from sage.env import SAGE_ROOT, SAGE_SRC, SAGE_DOC_SRC, SAGE_LOCAL, 
> DOT_SAGE, SAGE_ENV 
> >   File "/usr/lib/python2.7/dist-packages/sage/env.py", line 187, in 
>  
> > "libSingular not found--a working Singular install in $SAGE_LOCAL " 
> > RuntimeError: libSingular not found--a working Singular install in 
> $SAGE_LOCAL is required for Sage to work 
> > 
> > What should I do? 
>
> Hi, 
>
> You write 
>
> > I want to build the documentation of my branch, but running sage 
> --docbuild html gives following error:- 
>
> which seems to imply that you're trying to build the docs for some 
> development copy of Sage.  But the traceback shows that you're running 
> a sage installed from a system package: 
>
> >   File "/usr/lib/python2.7/dist-packages/sage/env.py", line 187, in 
>  
>
> and so on. 
>
> Are you trying to build a development branch of Sage?  Or some other 
> package that happens to use Sage? 
>

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Re: [sage-devel] libSingular not found

[hy15]

Yes, didn't realize that the command "sage" runs the executable installed.
Thanks a lot,

On Wednesday, April 10, 2019 at 6:02:06 PM UTC+5:30, E. Madison Bray wrote:
>
> On Wed, Apr 10, 2019 at 2:21 PM > wrote: 
> > 
> > I am trying to build a development branch of sage related to this ticket 
> (27482) 
>
> If you are working with Sage in a source code checkout, run `./sage`. 
> Running `sage` means you'll run the sage executable installed on your 
> system path, which is apparently broken or something. 
>
>
> > On Wednesday, April 10, 2019 at 5:45:55 PM UTC+5:30, E. Madison Bray 
> wrote: 
> >> 
> >> On Wed, Apr 10, 2019 at 1:25 PM  wrote: 
> >> > 
> >> > I want to build the documentation of my branch, but running sage 
> --docbuild html gives following error:- 
> >> > Traceback (most recent call last): 
> >> >   File "/usr/lib/python2.7/runpy.py", line 163, in 
> _run_module_as_main 
> >> > mod_name, _Error) 
> >> >   File "/usr/lib/python2.7/runpy.py", line 111, in 
> _get_module_details 
> >> > __import__(mod_name)  # Do not catch exceptions initializing 
> package 
> >> >   File 
> "/usr/lib/python2.7/dist-packages/sage_setup/docbuild/__init__.py", line 
> 24, in  
> >> > import sage.all 
> >> >   File "/usr/lib/python2.7/dist-packages/sage/all.py", line 71, in 
>  
> >> > from sage.env import SAGE_ROOT, SAGE_SRC, SAGE_DOC_SRC, 
> SAGE_LOCAL, DOT_SAGE, SAGE_ENV 
> >> >   File "/usr/lib/python2.7/dist-packages/sage/env.py", line 187, in 
>  
> >> > "libSingular not found--a working Singular install in $SAGE_LOCAL 
> " 
> >> > RuntimeError: libSingular not found--a working Singular install in 
> $SAGE_LOCAL is required for Sage to work 
> >> > 
> >> > What should I do? 
> >> 
> >> Hi, 
> >> 
> >> You write 
> >> 
> >> > I want to build the documentation of my branch, but running sage 
> --docbuild html gives following error:- 
> >> 
> >> which seems to imply that you're trying to build the docs for some 
> >> development copy of Sage.  But the traceback shows that you're running 
> >> a sage installed from a system package: 
> >> 
> >> >   File "/usr/lib/python2.7/dist-packages/sage/env.py", line 187, in 
>  
> >> 
> >> and so on. 
> >> 
> >> Are you trying to build a development branch of Sage?  Or some other 
> >> package that happens to use Sage? 
> > 
> > 
> >  
> > Disclaimer: This email and any files transmitted with it are 
> confidential and intended solely for the use of the individual or entity to 
> whom they are addressed. If you have received this email in error please 
> notify the system manager. This message contains confidential information 
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