From 6cc80fdeaa9d1c3130345f89a8c3dfe01b01b4e6 Mon Sep 17 00:00:00 2001
From: Martin Oswald <73196164+oswdm@users.noreply.github.com>
Date: Mon, 3 Jun 2024 12:00:21 +0200
Subject: [PATCH] fix fish shell support (#10445)
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Co-authored-by: Alexey Stern stern.alexey@gmail.com
Co-authored-by: Saugat Pachhai (सौगात) <suagatchhetri@outlook.com>
---
 dvc/stage/run.py | 69 +++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 53 insertions(+), 16 deletions(-)

diff --git a/dvc/stage/run.py b/dvc/stage/run.py
index 40369780e..703c397c8 100644
--- a/dvc/stage/run.py
+++ b/dvc/stage/run.py
@@ -2,6 +2,9 @@ import os
 import signal
 import subprocess
 import threading
+from functools import cache
+
+from packaging.version import InvalidVersion, Version
 
 from dvc.log import logger
 from dvc.utils import fix_env
@@ -12,25 +15,59 @@ from .exceptions import StageCmdFailedError
 logger = logger.getChild(__name__)
 
 
+@cache
+def _fish_supports_no_config(executable) -> bool:
+    """
+    Check if the fish shell supports the --no-config option.
+
+    Parameters:
+    executable (str): The path to the fish shell executable.
+
+    Returns:
+    bool: True if the fish version is greater than 3.3.0, False otherwise.
+    """
+    try:
+        output = subprocess.check_output(
+            [executable, "--version"],  # noqa: S603
+            text=True,
+        )
+        version = Version(output.split(" ")[-1].strip())
+        version_to_check = Version("3.3.0")
+        return version >= version_to_check
+    except (subprocess.CalledProcessError, IndexError, InvalidVersion):
+        logger.trace("could not check fish version, defaulting to False")
+        return False
+
+
+def _warn_if_fish(executable):
+    if (
+        executable is None
+        or os.path.basename(executable) != "fish"
+        or _fish_supports_no_config(executable)
+    ):
+        return
+    logger.warning(
+        "DVC detected that you are using a version of fish shell below 3.3.0 "
+        "Be aware that it might cause problems by overwriting "
+        "your current environment variables with values defined "
+        "in 'config.fish', which might affect your command. See "
+        "https://github.com/iterative/dvc/issues/1307. "
+    )
+
+
 def _make_cmd(executable, cmd):
     if executable is None:
         return cmd
-    opts = {"zsh": ["--no-rcs"], "bash": ["--noprofile", "--norc"]}
+    opts = {
+        "zsh": ["--no-rcs"],
+        "bash": ["--noprofile", "--norc"],
+        "fish": [],
+    }
     name = os.path.basename(executable).lower()
-    return [executable, *opts.get(name, []), "-c", cmd]
-
-
-def warn_if_fish(executable):
-    if executable is None or os.path.basename(os.path.realpath(executable)) != "fish":
-        return
-
-    logger.warning(
-        "DVC detected that you are using fish as your default "
-        "shell. Be aware that it might cause problems by overwriting "
-        "your current environment variables with values defined "
-        "in '.fishrc', which might affect your command. See "
-        "https://github.com/iterative/dvc/issues/1307. "
-    )
+    opt = opts.get(name, [])
+    if name == "fish" and _fish_supports_no_config(executable):
+        opt.append("--no-config")
+    return [executable, *opt, "-c", cmd]
 
 
 def _enforce_cmd_list(cmd):
@@ -106,7 +143,7 @@ def cmd_run(stage, dry=False, run_env=None):
     executable = get_executable()
 
     if not dry:
-        warn_if_fish(executable)
+        _warn_if_fish(executable)
 
     for cmd in commands:
         display_command(cmd)