Non Descriptive Error Failing apply patch

[juanmrad]

Issue:

The Following error is happening:

Could not apply patch! Skipping. The error was: Cannot apply patch patches/symfony/mime/PATCH-PHP-7-4-returns-duplicate-MimeType-for-some-files.patch

My Patch File:

From a0d263d0874788afcbbdedc2061c020017b9d548 Mon Sep 17 00:00:00 2001
From: Juan Mrad <__________>
Date: Tue, 16 Jun 2020 11:24:48 -0500
Subject: [PATCH] as

---
 FileinfoMimeTypeGuesser.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/FileinfoMimeTypeGuesser.php b/FileinfoMimeTypeGuesser.php
index b91a4ff..c135bca 100644
--- a/FileinfoMimeTypeGuesser.php
+++ b/FileinfoMimeTypeGuesser.php
@@ -58,6 +58,13 @@ class FileinfoMimeTypeGuesser implements MimeTypeGuesserInterface
             return null;
         }

-        return $finfo->file($path);
+        $mimeType = $finfo->file($path);
+
+        if ($mimeType) {
+            $mimeStart = substr($mimeType, 0, strlen($mimeType) / 2);
+            $mimeType = substr($mimeType, strlen($mimeType) / 2) === $mimeStart ? $mimeStart : $mimeType;
+        }
+
+        return $mimeType;
     }
 }
--
2.24.1 (Apple Git-126)

My Composer file:

    "extra": {
        "composer-exit-on-patch-failure": true,
        "patches": {
            "symfony/mime": {
                "Bug: PHP 7.4 returns duplicate MimeType for some file types. Check against itself and return non duplicate MimeType": "patches/symfony/mime/PATCH-PHP-7-4-returns-duplicate-MimeType-for-some-files.patch"
            }
        }
    },

There doesn't seem to be any description on why it failed.

After adding $e->getTraceAsString():

 #0 /workdir/vendor/cweagans/composer-patches/src/Patches.php(313): cweagans\Composer\Patches->getAndApplyPatch()
#1 [internal function]: cweagans\Composer\Patches->postInstall()
#2 phar:///workdir/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(164): call_user_func()
#3 phar:///workdir/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(116): Composer\EventDispatcher\EventDispatcher->doDispatch()
#4 phar:///workdir/bin/composer/src/Composer/Installer.php(636): Composer\EventDispatcher\EventDispatcher->dispatchPackageEvent()
#5 phar:///workdir/bin/composer/src/Composer/Installer.php(232): Composer\Installer->doInstall()
#6 phar:///workdir/bin/composer/src/Composer/Command/InstallCommand.php(122): Composer\Installer->run()
#7 phar:///workdir/bin/composer/vendor/symfony/console/Command/Command.php(245): Composer\Command\InstallCommand->execute()
#8 phar:///workdir/bin/composer/vendor/symfony/console/Application.php(835): Symfony\Component\Console\Command\Command->run()
#9 phar:///workdir/bin/composer/vendor/symfony/console/Application.php(185): Symfony\Component\Console\Application->doRunCommand()
#10 phar:///workdir/bin/composer/src/Composer/Console/Application.php(281): Symfony\Component\Console\Application->doRun()
#11 phar:///workdir/bin/composer/vendor/symfony/console/Application.php(117): Composer\Console\Application->doRun()
#12 phar:///workdir/bin/composer/src/Composer/Console/Application.php(113): Symfony\Component\Console\Application->run()
#13 phar:///workdir/bin/composer/bin/composer(61): Composer\Console\Application->run()
#14 /workdir/bin/composer(24): require('phar:///workdir...')
#15 {main}

[ssaaiidd]

Make sure the Patch package is installed on the system. I had a similar problem, this comment helped. With patch -v you can test whether the package is installed.

[juanmrad]

@ssaaiidd Yes found out that was the issue. definitively need to be more descriptive with the error :/ also nowhere it said it needed patch to be installed.