Drupal 10 version not installable through Composer

In composer.json:

    "require": {
        "php": ">=7.0 || >=8.0",
        "drupal/core": "^9 || ^10",
        "sachinchoolur/lightgallery": "^1.2.21"
    }

I think it should be:
sachinchoolur/lightGallery

    "require": {
        "php": ">=7.0 || >=8.0",
        "drupal/core": "^9 || ^10",
        "sachinchoolur/lightGallery": "^1.2.21"
    }

I get the following error when trying to include sachinchoolur/lightGallery :

  Problem 1
    - Root composer.json requires drupal/lightgallery ^1.4 -> satisfiable by drupal/lightgallery[1.4.0, 1.x-dev].
    - drupal/lightgallery[1.4.0, ..., 1.x-dev] require sachinchoolur/lightgallery ^1.2.21 -> could not be found in any version, there may be a typo in the package name.

Somewhere there's a typo and it's interfering with dependencies.

I have same problem installing with composer

The issue is caused by the fact that sachinchoolur/lightGallery library is not being considered as a package.
To resolve it - you need to install the library first and then proceed to the module installation.

Patch with updates on the installation process in the README.md applied.

Here's the console results after proposed resolution:

$ composer require 'drupal/lightgallery:^1.4'
./composer.json has been updated
Running composer update drupal/lightgallery
Gathering patches for root package.
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking drupal/lightgallery (1.4.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
Gathering patches for root package.
Gathering patches for dependencies. This might take a minute.
  - Installing drupal/lightgallery (1.4.0): Extracting archive
Generating autoload files
90 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
phpstan/extension-installer: Extensions installed

Same problem, "sachinchoolur/lightgallery" cannot be found by composer

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires sachinchoolur/lightgallery, it could not be found in any version, there may be a typo in the package name.

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
 - It's a private package and you forgot to add a custom repository to find it

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

If I change to "sachinchoolur/lightGallery" then composer has a problem with the uppercase letter.

  require.sachinchoolur/lightGallery is invalid, it should not contain upperc
  ase characters. Please use sachinchoolur/lightgallery instead.

You can only install the "light gallery plugin" manually and therefore it is best to extract it from the "required" in the composer.json file supplied with the module.

I don't think the new instructions in the patch are right.

The sachinchoolur/lightgallery package does not need to be installed first, but you need to have the repository defined in your root composer.json so composer can find it when installing drupal/lightgallery.

The lightgallery module requires "sachinchoolur/lightgallery": "^1.2.21", which is the latest 1.2 release.

This version is way behind, but probably the one to stick to unless later versions have been tested.

The readme has notes for adding the repository, but the version is wrong.

If you add the repository to your composer.json with version 1.2.21, it works.

"repositories": [
    {
        "type": "package",
        "package": {
            "name": "sachinchoolur/lightgallery",
            "version": "<strong>1.10.0</strong>",
            "type": "drupal-library",
            "source": {
                "url": "https://github.com/sachinchoolur/lightGallery",
                "type": "git",
                "reference": "<strong>1.10.0</strong>"
            }
        }
    }
]

I think the best way to handle this is to add the repository to the composer.json. Is that not allowed?

If not, just updating the readme instructions with the version number is a big help.

Thanks, mortona2k!
change

"repositories": [{
        "type": "composer",
        "url": "https://packages.drupal.org/8"
}],

to

"repositories": [{
            "type": "composer",
            "url": "https://packages.drupal.org/8"
        },
        {
            "type": "package",
            "package": {
                "name": "sachinchoolur/lightgallery",
                "version": "1.2.21",
                "type": "drupal-library",
                "source": {
                    "url": "https://github.com/sachinchoolur/lightGallery",
                    "type": "git",
                    "reference": "1.2.21"
                }
            }
        }
    ],

then command
composer require 'drupal/lightgallery:^1.4'
work properly

Had the same issue, solved by adding VasyOK's changes to the composer.json.

Thanks @VasyOK for the tip, working perfectly.

Thanks for the explanation @mortona2k and for the documentation! @paulrad, thanks for the patch, but as pointed by @mortana2k, you just need the package defined on your repositories section.

Reviewed and commited the changes to the README.md, thank you all!

Automatically closed - issue fixed for 2 weeks with no activity.