conda activate sage-build  works nicely. Thanks!
Le lundi 9 mai 2022 à 13:20:36 UTC+2, isu...@gmail.com a écrit :

> conda activate sage-build  should do the trick.
>
> Isuru
>
> On Mon, May 9, 2022 at 6:03 AM Dima Pasechnik <dim...@gmail.com> wrote:
>
>>
>>
>> On Mon, 9 May 2022, 11:49 harald....@gmail.com, <harald....@gmail.com> 
>> wrote:
>>
>>> ... or add it to the PATH, I suppose. But how do I find it now?
>>
>>
>> searching config.log for tachyon gives
>>
>> /Users/harald/miniconda3/envs/sage-build/bin/tachyon
>>
>> Indeed, searching for PATH there will tell you that 
>>
>> Users/harald/miniconda3/envs/sage-build/bin
>>
>> was in your PATH while you built Sage.
>>
>>
>>>
>>> Le lundi 9 mai 2022 à 11:38:48 UTC+2, dim...@gmail.com a écrit :
>>>
>>>> You have built Sage with a lot of Conda packages, as can be seen from 
>>>> your config.log.
>>>> Not sure you had Conda activated, but you had its binary directories in 
>>>> PATH,
>>>> in particular tachyon was found there.
>>>>
>>>> Now tachyon is no longer in PATH. One way to remedy this would be to 
>>>> activate Conda and then start Sage.
>>>>
>>>>
>>>>
>>>> On Mon, 9 May 2022, 10:10 harald....@gmail.com, <harald....@gmail.com> 
>>>> wrote:
>>>>
>>>>> No, it is not seen. I do have conda. I don't *think* I built this 
>>>>> version of Sage under it, but I am not positive.
>>>>>
>>>>> Le lundi 9 mai 2022 à 11:06:59 UTC+2, dim...@gmail.com a écrit :
>>>>>
>>>>>> and if you run
>>>>>>
>>>>>> which tachyon
>>>>>>
>>>>>> outside of "sage -sh" subshell, is it seen?
>>>>>>
>>>>>>
>>>>>> If not, it might be about activated vs non-activated Conda. 
>>>>>> If you built Sage under Conda, you'd need to run it under Conda, too.
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Mon, 9 May 2022, 10:02 harald....@gmail.com, <harald....@gmail.com> 
>>>>>> wrote:
>>>>>>
>>>>>>> Right, "which tachyon" gives an empty output. What to do?
>>>>>>> Le lundi 9 mai 2022 à 09:11:41 UTC+2, dim...@gmail.com a écrit :
>>>>>>>
>>>>>>>> OK, so tachyon comes from Conda... Can you check that tachyon is in 
>>>>>>>> Sage's PATH, i.e. 
>>>>>>>> run the following two commands: 
>>>>>>>>
>>>>>>>> ./sage -sh 
>>>>>>>> which tachyon 
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sun, May 8, 2022 at 11:56 PM harald....@gmail.com 
>>>>>>>> <harald....@gmail.com> wrote: 
>>>>>>>> > 
>>>>>>>> > Here it is. 
>>>>>>>> > 
>>>>>>>> > Le samedi 7 mai 2022 à 19:21:24 UTC+2, dim...@gmail.com a écrit 
>>>>>>>> : 
>>>>>>>> >> 
>>>>>>>> >> Please post the top level config.log. 
>>>>>>>> >> 
>>>>>>>> >> On Sat, 7 May 2022, 16:52 harald....@gmail.com, <
>>>>>>>> harald....@gmail.com> wrote: 
>>>>>>>> >>> 
>>>>>>>> >>> Hi, 
>>>>>>>> >>> 
>>>>>>>> >>> I am running SageMath 9.5 (compiled from source on an 
>>>>>>>> Intel-based Mac). I haven't been having trouble, but today I was 
>>>>>>>> toying 
>>>>>>>> with 3D plotting, and, when I tried to do an animation, I got an error 
>>>>>>>> message telling me that tachyon could not be found. (I have not used 
>>>>>>>> tachyon before. Non-animated 3D plots work fine). 
>>>>>>>> >>> 
>>>>>>>> >>> The following example from the documentation 
>>>>>>>> >>> ----- 
>>>>>>>> >>> S = sphere(opacity=0.8, aspect_ratio=[1,1,1]) 
>>>>>>>> >>> L = line3d([(0,0,0),(2,0,0)], thickness=10, color='red') 
>>>>>>>> >>> M = S + S.translate((2,0,0)) + L 
>>>>>>>> >>> M.show(viewer='tachyon') 
>>>>>>>> >>> ----- 
>>>>>>>> >>> gives an error message: 
>>>>>>>> >>> .... 
>>>>>>>> >>> FileNotFoundError: [Errno 2] No such file or directory: 
>>>>>>>> 'tachyon' 
>>>>>>>> >>> 
>>>>>>>> >>> 
>>>>>>>> >>> What to do? 
>>>>>>>> >>> 
>>>>>>>> >>> Best 
>>>>>>>> >>> Harald 
>>>>>>>> >>> 
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