Finaly, I have found out what was the problem. composer.json file in the project I was trying to load - UPS library -was invalid. I was able to download files when I ran:
composer.phar install
but it looks like composer.json file was ignored. I found it out when I ran
composer.phar update
and got
No valid composer.json was found
With option -v I got error that "name" is undefined index. So, I simply added "name" field to the composer.json. Final version is:
{
"name":"KoulSlou/UPS",
"autoload": {
"files": [
"libraries/Ups/Ups.php",
"libraries/Ups/Ups_Base.php",
"libraries/Ups/Ups_Base_Response.php",
"libraries/Ups/Ups_Live_Rates.php"
]
}
}