Composer dependency resolution fun

a_composer.json

{
    "require": {
        "psr/log": "*",
        "symfony/console": "=4.4.26 || =5.4.26"
    }
}

b_composer.json

{
    "require": {
        "symfony/console": "=4.4.26 || =5.4.26",
        "psr/log": "*"
    }
}

result.diff

--- /dev/fd/63	2023-08-04 14:38:01.103626765 +0100
+++ /dev/fd/62	2023-08-04 14:38:01.103626765 +0100
@@ -1,8 +1,12 @@
-psr/container 1.1.2
-psr/log 3.0.0
-symfony/console v4.4.26
+psr/container 2.0.2
+psr/log 2.0.0
+symfony/console v5.4.26
 symfony/deprecation-contracts v3.3.0
+symfony/polyfill-ctype v1.27.0
+symfony/polyfill-intl-grapheme v1.27.0
+symfony/polyfill-intl-normalizer v1.27.0
 symfony/polyfill-mbstring v1.27.0
 symfony/polyfill-php73 v1.27.0
 symfony/polyfill-php80 v1.27.0
-symfony/service-contracts v2.5.2
+symfony/service-contracts v3.3.0
+symfony/string v6.3.2

test.sh

#!/bin/sh

set -eu

dir=$(mktemp -d)
cd "$dir"
mkdir a b
echo '{"require":{"psr/log":"*","symfony/console":"=4.4.26 || =5.4.26"}}' | jq > a/composer.json
echo '{"require":{"symfony/console":"=4.4.26 || =5.4.26","psr/log":"*"}}' | jq > b/composer.json
composer update -d a
composer update -d b
diff --ignore-space-change -U3 <(cd a && composer show | awk '{print $1, $2}') <(cd b && composer show | awk '{ print $1, $2 }')