File already exists at path

[Spreeuw]

Using latest master with this config:

{
    "require": {
        "iio/libmergepdf": "^4.0"
    },
    "require-dev": {
        "coenjacobs/mozart": "dev-master"
    },
    "extra": {
        "mozart": {
            "dep_namespace": "MyLibMerge\\Vendor",
            "dep_directory": "/lib/packages/",
            "classmap_directory": "/lib/classes/",
            "classmap_prefix": "MyLibMerge_",
            "excluded_packages": [
            ],
            "override_autoload": {
            },
            "delete_vendor_directories": true
        }
    },
    "scripts": {
        "post-install-cmd": [
            "\"vendor/bin/mozart\" compose",
            "composer dump-autoload"
        ],
        "post-update-cmd": [
            "\"vendor/bin/mozart\" compose",
            "composer dump-autoload"
        ]
    }
}

I get the error:

File already exists at path: lib/classes/tecnickcom/tcpdf/vendor/tecnickcom/tcpdf/tcpdf.php

This package tecnickcom/tcpdf is included as a dependency directly in the iio/libmergepdf package but also as a grandchild, via the setasign/fpdi dependency.

I can avoid this by adding it to the excluded_packages which is probably fine for this particular package, but wanted to report the bug for completeness.

There appears to be some sort of path duplication too: tecnickcom/tcpdf/vendor/tecnickcom (related to #58 but for classmaps?)

[BrianHenryIE]

Hey, try this:

{
  "require": {
    "iio/libmergepdf": "^4.0"
  },
  "require-dev": {
    "coenjacobs/mozart": "dev-master",
    "cweagans/composer-patches": "*"
  },
  "extra": {
    "patches": {
      "coenjacobs/mozart": {
        "Move each file only once (classmap)": "https://github.com/coenjacobs/mozart/pull/91.patch"
      }
    },
    "mozart": {
      "dep_namespace": "MyLibMerge\\Vendor",
      "dep_directory": "/lib/packages/",
      "classmap_directory": "/lib/classes/",
      "classmap_prefix": "MyLibMerge_",
      "excluded_packages": [
      ],
      "override_autoload": {
      },
      "delete_vendor_directories": true
    }
  },
  "scripts": {
    "post-install-cmd": [
      "\"vendor/bin/mozart\" compose",
      "composer dump-autoload"
    ],
    "post-update-cmd": [
      "\"vendor/bin/mozart\" compose",
      "composer dump-autoload"
    ]
  }
}

[Spreeuw]

Works for me! 💯