Ubuntu 18.04 installation error. about lucaschess

[xaizek]

pip3 install --user scandir (or sudo pip3 install scandir) doesn't help?

[Arunachala-Ramana]

I edited the question. The scandir issue is resolved. Now the issue is

Traceback (most recent call last):
File "Lucas.py", line 44, in
import Code.Init
File "./Code/Init.py", line 5, in
from Code import Procesador
File "./Code/Procesador.py", line 6, in
from Code import AperturasStd
File "./Code/AperturasStd.py", line 1, in
import LCEngine4 as LCEngine
ImportError: No module named LCEngine4

[xaizek]

Have you executed xcython_linux.sh? Mind that in 11.17 it's incorrectly uses version 2 of the engine so you might need to replace 2's with 4's in it. Or just use the latest commit, which does that.

[Arunachala-Ramana]

Nope I didnt run that command. My lucaschess folder doesn't have such a file. Please bear with me, i am quite naive in this, so please do bear with the follow up questions.

[xaizek]

It's in LCEngine/ directory. Do

cd LCEngine
bash xcython_linux.sh

[Arunachala-Ramana]

Very kind of you to help. Here is the output when i executed that command.

rm: cannot remove 'LCEngine4.so': No such file or directory
Traceback (most recent call last):
File "./setup.py", line 4, in
from Cython.Build import cythonize
ImportError: No module named Cython.Build
x86_64
cp: cannot stat 'LCEngine4.so': No such file or directory
cp: cannot stat 'libirina.so': No such file or directory
cp: cannot stat 'LCEngine4.so': No such file or directory
cp: cannot stat 'libirina.so': No such file or directory

[xaizek]

There is a list of dependencies here and Cython is one of them. Install it and other dependencies and run scripts again (just realized that you probably didn't build irina either if you didn't read those instructions):

cd LCEngine/irina
bash xmk_linux.sh
cd ..
bash xcython_linux.sh

Correct output of xcython_linux.sh script looks something like this (doesn't have to match exactly):

running build_ext
building 'LCEngine4' extension
gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c LCEngine4.c -o build/temp.linux-x86_64-2.7/LCEngine4.o
In file included from LCEngine4.c:614:0:
irina.h:16:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
 void init_board();
 ^
irina.h:22:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
 int numMoves( );
 ^
gcc -pthread -shared build/temp.linux-x86_64-2.7/LCEngine4.o -L/usr/lib64 -lirina -lpython2.7 -o /home/xaizek/bin/lucaschess/LCEngine/LCEngine4.so
x86_64

[Arunachala-Ramana]

Thanks once again. Will come back soon with an update.

[Arunachala-Ramana]

This is the output which i got.

---

rm: cannot remove 'LCEngine4.so': No such file or directory
Compiling LCEngine4.pyx because it changed.
[1/1] Cythonizing LCEngine4.pyx
/usr/local/lib/python2.7/dist-packages/Cython/Compiler/Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /home/chandru1/lucaschess/LCEngine/LCEngine4.pyx
tree = Parsing.p_module(s, pxd, full_module_name)
running build_ext
building 'LCEngine4' extension
creating build
creating build/temp.linux-x86_64-2.7
x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-kjnyAR/python2.7-2.7.17=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c LCEngine4.c -o build/temp.linux-x86_64-2.7/LCEngine4.o
x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-kjnyAR/python2.7-2.7.17=. -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-kjnyAR/python2.7-2.7.17=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC build/temp.linux-x86_64-2.7/LCEngine4.o -lirina -o /home/chandru1/lucaschess/LCEngine/LCEngine4.so
x86_64

---

[xaizek]

Looks like a success to me, does running LucasChess work now?

[Arunachala-Ramana]

How to run? What should i execute?

[xaizek]

While inside Linux directory do bash xlucas.sh.

[Arunachala-Ramana]

Nopes.

---

Traceback (most recent call last):
File "./Lucas.py", line 44, in
import Code.Init
File "./Code/Init.py", line 5, in
from Code import Procesador
File "./Code/Procesador.py", line 30, in
from Code import GestorRoutes
File "./Code/GestorRoutes.py", line 11, in
from Code import LibChess
File "./Code/LibChess.py", line 4, in
import chess
ImportError: No module named chess

[xaizek]

Have you installed python-chess as per instructions?

sudo apt-get install python-chess

By the way, this is how to format output of commands:

```
put output here
```

[Arunachala-Ramana]

Yes. I have

sudo pip install python-chess

This is the command right?

[Arunachala-Ramana]

chandru1@chandru-hp:~$ sudo pip install python-chess
[sudo] password for chandru1: 
The directory '/home/chandru1/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/chandru1/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting python-chess
  Downloading https://files.pythonhosted.org/packages/3d/ed/ae1dbb45de32df04c9b2cdfa1802bd7509978da1ad245b3180276f5937a6/python-chess-0.24.2.tar.gz (140kB)
    100% |████████████████████████████████| 143kB 237kB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-Xl_FAR/python-chess/setup.py", line 35, in <module>
        """)
    ImportError: You are installing python-chess on Python 2.
    
    Python 2 support has been dropped. Consider upgrading to Python 3, or using
    the 0.23.x branch, which will be maintained until the end of 2018.

This is what i got when i executed it.

[xaizek]

There are multiple ways to install it and they can install different versions. Your command has failed because it's using version that's too new for Python2, this one should work fine (I installed this way):

sudo pip install python-chess==v0.23.11

[Arunachala-Ramana]

Yaaaaaaayyy! Working. I can't thank you enough. Thanks for the time and patience. A 1000 thanks wont suffice. Very happy.

[xaizek]

Great, no problem. You want to also do this though or some engines won't work (file permissions aren't correct in the releases and in the repository):

chmod +x Engines/Linux64/komodo/Linux/komodo-10-linux
chmod +x Engines/Linux64/mccain/McCain-X3_x64_linux
chmod +x Engines/Linux64/stockfish/Linux/stockfish_10_x64

Don't forget to close this issue.

[Arunachala-Ramana]

Sure. Will do so. Finally a last question and then i shall close the issue. Is it possible to expect Lucaschess as a .deb package in ubuntu like Pychess so that people can directly install via package manager and not struggle like how i did here :P?

[xaizek]

Only if someone is willing to be its maintainer in Debian or at least write a package specification (maybe there is one somewhere). However, mind that Lucas isn't developing this version anymore. He's working on Lucas Chess (R), which might not build on Linux yet (I haven't tried it at all, but it was mentioned somewhere here).