Aha. There is no PYTHONHOME env var set in my Linux default environment,
thus also not in the returned results of ⎕ENV; and
2 ⌹.integral "sqrt(x³)"
DOMAIN ERROR+
2⌹[20]'sqrt(x³)'
^ ^
)more
No python script 'integral.py' in the current directory or in /usr/local/bin
What should the 'integral.py' script contain, and is it auto-generated by
GNU APL during build, or is it supposed to be installed by the Python
'sympy' package?
It is not present in my setup.
I see, after building GNU APL, there is a zero-byte 'integral.py' file in
src/ and I see the Makefile just uses 'touch' to create that.
-Russ
On Tue, Dec 30, 2025 at 2:46 AM Dr. Jürgen Sauermann <
mail@jürgen-sauermann.de> wrote:
> Hi,
>
> I am not really a python expert, but trying my best.
>
> On my box I have installed python and sympy and it works.
> I therefore suppose your problem is related to your installation.
>
> Having that said, could you please send me the the
> *)MORE* information right after the *DOMAIN ERROR*?
>
> Other things to check:
>
> *⎕ENV* in apl, in particular *PYTHONHOME* and friends.
>
> BTW python is checked at runtime therefore the *,/configure* output
> does not matter,
>
>
> Thanks,
> Jürgen
>
>
> On 12/30/25 06:24, Russtopia wrote:
>
> Hello,
>
> In regards to the new ⌹.integral support -- I am seeing the DOMAIN ERROR
> as mentioned in docs (https://www.gnu.org/software/apl/apl.html#Integral-B),
> yet I have installed python sympy package.
> It is locally installed, in $HOME/.local/bin as both 'sympy' and 'isympy'
> on my system.
>
> I ensured $HOME/.local/bin was in my $PATH prior to running the
> newly-installed GNU APL, and can run 'sympy' from there by itself from bash
> to evaluate expressions.
>
> My system has Python 3.9.20, installed as /usr/bin/python3 -> python-exec2c
>
> Is there any additional config or debug I should enable to troubleshoot
> this failure to find sympy?
>
> $ apl --cfg
>
> configurable options:
> ---------------------
> ASSERT_LEVEL_WANTED=1 (default)
> SECURITY_LEVEL_WANTED=0 (default)
> APSERVER_PATH=/tmp/GNU-APL/APserver (default)
> APSERVER_PORT=16366 (default)
> APSERVER_TRANSPORT=0 (default)
> CORE_COUNT_WANTED=8
> DYNAMIC_LOG_WANTED=no (default)
> MAX_RANK_WANTED=8 (default)
> RATIONAL_NUMBERS_WANTED=yes
> SHORT_VALUE_LENGTH_WANTED=12, therefore:
> sizeof(Value) : 464 bytes
> sizeof(Cell) : 24 bytes
> sizeof(Value header): 176 bytes
>
> VALUE_CHECK_WANTED=no (default)
> VALUE_HISTORY_WANTED=no (default)
> VF_TRACING_WANTED=no (default)
> VISIBLE_MARKERS_WANTED=no (default)
>
> how ./configure was (probably) called:
> --------------------------------------
> ./configure '--with-ctrld_del=yes' 'RATIONAL_NUMBERS_WANTED=yes'
> 'CORE_COUNT_WANTED=8'
>
> BUILDTAG:
> ---------
> Project: GNU APL
> Version / SVN: 1.9 / SVN: 1937
> Build Date: 2025-12-29 21:01:38 PST
> Build OS: Linux 6.5.10_p1-debian-sources x86_64
> config.status: default ./configure options
> Archive SVN: 1935
>
> Thanks,
> -Russ
>
>
> On Sun, Dec 28, 2025 at 9:00 AM <[email protected]> wrote:
>
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>> 1. ⌹.integral (Dr. Jürgen Sauermann)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sat, 27 Dec 2025 21:08:39 +0100
>> From: Dr. Jürgen Sauermann <[email protected]>
>> To: bug-apl <[email protected]>
>> Subject: ⌹.integral
>> Message-ID:
>> <[email protected]>
>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>
>> Hi,
>>
>> as a late Xmas present, there is a new GNU APL function *⌹.integral*
>> which,
>> nomen est omen, computes the indefinite integral of an expression *B*:
>>
>> * 2 ⌹.integral "sqrt(x³)"
>> _____
>> 2⋅x⋅╲╱ x³
>> ───────────
>> 5
>> *
>> *SVN 1937.*
>>
>> Enjoy.
>> Jürgen
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