linux-kernel - [PATCH] checkpatch: use python3 to find codespell dictionary

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Message-Id: <20220308025547.20412-1-sagarmp@cs.unc.edu>
Date:   Mon,  7 Mar 2022 21:55:48 -0500
From:   Sagar Patel <sagarmp@...unc.edu>
To:     Andy Whitcroft <apw@...onical.com>
Cc:     Joe Perches <joe@...ches.com>,
        Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        linux-kernel@...r.kernel.org, Sagar Patel <sagarmp@...unc.edu>
Subject: [PATCH] checkpatch: use python3 to find codespell dictionary

Commit 0ee3e7b8893e ("checkpatch: get default codespell dictionary path
from package location") introduced the ability to search for the
codespell dictionary rather than hardcoding its path.

codespell requires Python 3.6 or above, but on some systems, the python
binary is a Python 2.7 interpreter. In this case, searching for the
dictionary fails, subsequently making codespell fail:

No codespell typos will be found - file '/usr/share/codespell/dictionary.txt': No such file or directory

So, use python3 to remove ambiguity.

In addition, when searching for the dictionary, do not check if the
codespell binary exists since codespell can be installed via a Python
package manager. In this case, a codespell binary is not exported in
$PATH, but a dictionary does exist.

Signed-off-by: Sagar Patel <sagarmp@...unc.edu>
---
 scripts/checkpatch.pl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b01c36a15d9d..46302e074b18 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -334,7 +334,7 @@ if ($user_codespellfile) {
 } elsif (!(-f $codespellfile)) {
 	# If /usr/share/codespell/dictionary.txt is not present, try to find it
 	# under codespell's install directory: <codespell_root>/data/dictionary.txt
-	if (($codespell || $help) && which("codespell") ne "" && which("python") ne "") {
+	if (($codespell || $help) && which("python3") ne "") {
 		my $python_codespell_dict = << "EOF";
 
 import os.path as op
@@ -344,7 +344,7 @@ codespell_file = op.join(codespell_dir, 'data', 'dictionary.txt')
 print(codespell_file, end='')
 EOF
 
-		my $codespell_dict = `python -c "$python_codespell_dict" 2> /dev/null`;
+		my $codespell_dict = `python3 -c "$python_codespell_dict" 2> /dev/null`;
 		$codespellfile = $codespell_dict if (-f $codespell_dict);
 	}
 }
-- 
2.25.1