OpenWrap hangs while or after resolving dependencies.

[rvdginste]

Using master of openwrap, I have a package that seems to give some problems while resolving dependencies.

The package I'm trying to build has a dependency on package A, on package B, and a couple of others.

Something like this:
depends: packageA >= 2.0 < 3.0
depends: packageB >= 2.1 < 3.0

On the package repository, we have following versions:
packageA: 2.0.0, 2.1.0, 2.1.1
packageB: 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5

packageB itself depends on package A with the following rule:
depends: packageA >= 2.0 < 3.0

The following happens with update-wrap:

• after the command, i get "updating project packages..." which takes some time......
• then it prints the lines with the dependencies added "project repository: .... added"
• then it seems to hang and use more and more memory

It fetches version 2.1.5 of packageB, but version 2.0.0 of packageA. I attached the debugger while it was hanging, and paused it. The debugger stopped in the code in the class LoggingPackageVisitor, method WriteDebug. There are two lists of packages: SuccessfulPackages and IncompatiblePackages. The list SuccesfulPackages seemed normal: 20 entries and packages that make sense. Among those is packageA with version 2.0.0 (which actually fulfills the requirements). The list IncompatiblePackages does not make sense however. At the time i checked it, the list contains 7324218 entries, that all refer to the same package: packageA version 2.1.1. I don't understand why the package ends up in the incompatible list, and I don't get why the same package would be added several times in that list.

So, after a while, I just interrupt openwrap. All required packages have been added in the "wraps"-folder. Even though it didn't fetch 2.1.1 of packageA, the packages that it did fetch do follow the requirements.

PS. Now I noticed during debugging that I specified the version range incorrectly... I forgot the add the "and" keyword in between the version constraints.... but that shouldn't cause the above problem...?

[serialseb]

It shouldn't cause the problem but yea the clause is wrong. You can replace it with ~> 2.1 too.

That said it may be a problem with the resolver and some equality going bonkers there. Will have a look when am back on the computer.

Sebastien Lambla

On 16 Jun 2012, at 13:57, "Ruben Vandeginste" reply@reply.github.com wrote:

Using master of openwrap, I have a package that seems to give some problems while resolving dependencies.

The package I'm trying to build has a dependency on package A, on package B, and a couple of others.

Something like this:
depends: packageA >= 2.0 < 3.0
depends: packageB >= 2.1 < 3.0

On the package repository, we have following versions:
packageA: 2.0.0, 2.1.0, 2.1.1
packageB: 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5

packageB itself depends on package A with the following rule:
depends: packageA >= 2.0 < 3.0

The following happens with update-wrap:

• after the command, i get "updating project packages..." which takes some time......
• then it prints the lines with the dependencies added "project repository: .... added"
• then it seems to hang and use more and more memory

It fetches version 2.1.5 of packageB, but version 2.0.0 of packageA. I attached the debugger while it was hanging, and paused it. The debugger stopped in the code in the class LoggingPackageVisitor, method WriteDebug. There are two lists of packages: SuccessfulPackages and IncompatiblePackages. The list SuccesfulPackages seemed normal: 20 entries and packages that make sense. Among those is packageA with version 2.0.0 (which actually fulfills the requirements). The list IncompatiblePackages does not make sense however. At the time i checked it, the list contains 7324218 entries, that all refer to the same package: packageA version 2.1.1. I don't understand why the package ends up in the incompatible list, and I don't get why the same package would be added several times in that list.

So, after a while, I just interrupt openwrap. All required packages have been added in the "wraps"-folder. Even though it didn't fetch 2.1.1 of packageA, the packages that it did fetch do follow the requirements.

PS. Now I noticed during debugging that I specified the version range incorrectly... I forgot the add the "and" keyword in between the version constraints.... but that shouldn't cause the above problem...?

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