Kaldi still need python2.7 when being built on macOS

[haaddii]

Python2.7 had been removed from macOS since 12.3. But it seems like the build process still need python2.

And since I am using an arm based machine, I can't install python2 since there's no such package for Darwin arm64.

I try to build it without python2 and didn't provide openblas path for expecting it using the accerlate. It stops without printout any unexpected errors after printing a lot lines of "checking" and "config.status". run.log

[jtrmal]

thanks for reporting this I think you could install python2.7 via brew but not sure if it's a good solution. Kaldi still needs py2.7, unfortunately (or to be precise, at least some scripts in some recipes do). But most of the main scripts should run just fine once you get past the kaldi install.

On Tue, Apr 12, 2022 at 6:03 PM Hardy @.***> wrote:

Python2.7 had been removed from macOS since 12.3. But it seems like the build process still need python2.

I tried built it without python2 and didn't provide openblas path for expecting it using the accerlate. And it stops without printout any unexpected errors after printing a lot lines of "checking" and "config.status". run.log https://github.com/kaldi-asr/kaldi/files/8476844/run.log

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[kkm000]

My POV is that if someone wants to run an antiquated recipe, they should simply check out a version of Kaldi around the time the recipe was built with. That, among other things, is the best for reproducing a corresponding paper's results. I would not worry about egs, only the common scripts. @jtrmal, whadya think?

[danpovey]

I'd be OK to have python2.7 be removed from the dependency list. It seems only a few local scripts still require it.

[haaddii]

Update: And since I am using an arm based machine, I can't install python2 since there's no such package for Darwin arm64. It's my fault for not doing further googling. I just thought I can't install python2 on my machine, since the brew install python2 command install a x86 version for me and fail with error saying wrong arch or so.

But actually I can use Pyenv to install a Cpython2.7 then install virtualenv and create a venv, source it. So then I can have a python2.7 that is arm64 on a M1 series system.

I can have kaldi running on my machine now. Though it would be great if python3 can be the default python version in kaldi.

[hemakaveri]

Is it possible to simply alias python with python3 and use it with the dependency on python2.7 removed from the list of dependencies?

[jtrmal]

it is not that easy to do it this way, unfortunately y.

On Thu, Feb 23, 2023 at 12:39 AM hemakaveri @.***> wrote:

Is it possible to simply alias python with python3 and use it with the dependency on python2.7 removed from the list of dependencies?

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[hemakaveri]

Is there any other way?

On Thu, 23 Feb 2023 at 20:34, jtrmal @.***> wrote:

it is not that easy to do it this way, unfortunately y.

On Thu, Feb 23, 2023 at 12:39 AM hemakaveri @.***> wrote:

Is it possible to simply alias python with python3 and use it with the dependency on python2.7 removed from the list of dependencies?

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[jtrmal]

no other way as far as I am aware. y.

On Thu, Feb 23, 2023 at 10:37 AM hemakaveri @.***> wrote:

Is there any other way?

On Thu, 23 Feb 2023 at 20:34, jtrmal @.***> wrote:

it is not that easy to do it this way, unfortunately y.

On Thu, Feb 23, 2023 at 12:39 AM hemakaveri @.***> wrote:

Is it possible to simply alias python with python3 and use it with the dependency on python2.7 removed from the list of dependencies?

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[hemakaveri]

The problem is that new Mac machines (M1, M2) donot support python 2.7. -hema

On Thu, Feb 23, 2023 at 9:22 PM jtrmal @.***> wrote:

no other way as far as I am aware. y.

On Thu, Feb 23, 2023 at 10:37 AM hemakaveri @.***> wrote:

Is there any other way?

On Thu, 23 Feb 2023 at 20:34, jtrmal @.***> wrote:

it is not that easy to do it this way, unfortunately y.

On Thu, Feb 23, 2023 at 12:39 AM hemakaveri @.***> wrote:

Is it possible to simply alias python with python3 and use it with the dependency on python2.7 removed from the list of dependencies?

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[kkm000]

I think python 2 has been dead so thoroughly for so long a time that hardly anyone would want to run the egs that require it.

Let's remove it from general dependencies. It's causing problems and, besides, simply embarrassing... :)

[danijel3]

I'd like to reopen this issue again for discussion because Python2 is being fazed out of main Linux distros. For example: https://wiki.debian.org/Python/2Removal, so you can't even build Kaldi on current stable version of Debian.

The only reason for python2 was (I think) due to Phonetisaurus, but that also got upgraded to python3, afaik.

[aaronchantrill]

Python 2.7 is no longer available with Debian Bookworm. I was able to edit the check_dependencies.sh script in tools to get past that check, and then created the python directory and .use_default_python file in tools. I did not install python 2.7, and so far I haven't run into anything that actually requires it. Could it be made an optional, suggested component?

[turinaf]

@aaronchantrill I'm also trying to install kaldi on ubuntu, but couldn't get past the python2 requirement. May I know how you did it? Thank you.

[aaronchantrill]

@turinaf - sorry, I haven't been checking my email the last couple of days. Here is the diff for the check_dependencies.sh script:

@@ -93,11 +93,11 @@ if ! have awk; then
 fi

 pythonok=true
-if ! have python2.7; then
-  echo "$0: python2.7 is not installed"
-  add_packages python27 python2.7
-  pythonok=false
-fi
+#if ! have python2.7; then
+#  echo "$0: python2.7 is not installed"
+#  add_packages python27 python2.7
+#  pythonok=false
+#fi

 if ! have python3; then
   echo "$0: python3 is not installed"
@@ -108,13 +108,13 @@ fi
 (
 #Use a subshell so that sourcing env.sh does not have an influence on the rest of the script
 [ -f ./env.sh ] && . ./env.sh
-if $pythonok && ! have python2; then
-  mkdir -p $PWD/python
-  echo "$0: python2.7 is installed, but the python2 binary does not exist." \
-       "Creating a symlink and adding this to tools/env.sh"
-  ln -s $(command -v python2.7) $PWD/python/python2
-  echo "export PATH=$PWD/python:\${PATH}" >> env.sh
-fi
+#if $pythonok && ! have python2; then
+#  mkdir -p $PWD/python
+#  echo "$0: python2.7 is installed, but the python2 binary does not exist." \
+#       "Creating a symlink and adding this to tools/env.sh"
+#  ln -s $(command -v python2.7) $PWD/python/python2
+#  echo "export PATH=$PWD/python:\${PATH}" >> env.sh
+#fi

 if [[ -f $PWD/python/.use_default_python && -f $PWD/python/python ]]; then

It looks like I just commented out the checks. It's not great, but like I said, Kaldi seems to work without Python 2.7 (at least everything I've tried).

Like I said, I think I also had to create a .use_default_python file in the tools/python directory to get it to stop complaining.