implement provides (#574) · Issues · alpine / apk-tools

implement provides

Packages should be able to export tags which can be used in dependencies.

E.g. vlc could export tag plugin-api=2. And clients could depend on vlc(plugin-api)>=2 instead of exact version number.

This is basically same as “provides”. Provides support is just more generic, especially if we allow versioned provides, e.g. “provides=vlc-plugin-api=2”. If we don’t want to pollute the regular package namespace we can allow some special character in provides, e.g. “provides=vlc:plugin-api=2”.

(from redmine: issue id 574, created on 2011-04-08, closed on 2012-04-26)

Relations:
- relates #511 (closed)
Changesets:
- Revision e128c95f by Timo Teräs on 2012-02-24T08:13:05Z:

pkg: add field for provides as 'p'

ref #574

Revision 99145e2c by Timo Teräs on 2012-02-24T14:31:40Z:

all: introduce apk_provides and use it in apk_name

in preparation for provides support. implements also some
dependency satisfaction helper routines.

ref #574.

Revision 12bdec38 by Timo Teräs on 2012-02-24T16:29:30Z:

solver, dot: elementary provides fixes

implementation is still not near finished, but now at least it
can handle it to a minimum degree. many cases are not done right
yet, though. ref #574.

Revision 1074c4d3 by Timo Teräs on 2012-02-27T08:26:30Z:

solver: have most inherited things per-package and clean ups

Required for provides support as package might be pulled in via
non-primary package name. This allows relatively easily to pass
through inherited flags via the provided names. ref #574.

Revision b7a22e55 by Timo Teräs on 2012-02-27T14:35:04Z:

solver, test: implements more provides things, add tests

ref #574

Revision 536c2197 by Timo Teräs on 2012-02-28T07:39:35Z:

solver: allow multiple packages with same virtual provides

ref #574

Revision 179b453a by Timo Teräs on 2012-02-28T08:28:39Z:

solver: fix conflicting provides detection

ref #574

Revision 2655d27e by Timo Teräs on 2012-02-28T09:27:17Z:

solver: consider provided names also for preference

ref #574

Revision 52dcc2d72d64266246f6d6253b8c9804d4d538c6 by Natanael Copa on 2012-08-16T12:50:06Z:

main/abuild: start add 'provides' info

ref #574

Packages should be able to export tags which can be used in
dependencies.

E.g. vlc could export tag plugin-api=2. And clients could depend on
vlc(plugin-api)&gt;=2 instead of exact version number.

This is basically same as “provides”. Provides support is just more
generic, especially if we allow versioned provides, e.g.
“provides=vlc-plugin-api=2”. If we don’t want to pollute the regular
package namespace we can allow some special character in provides, e.g.
“provides=vlc:plugin-api=2”.

*(from redmine: issue id 574, created on 2011-04-08, closed on 2012-04-26)*

* Relations:
  * relates #511
* Changesets:
  * Revision e128c95fdfe8293c8838551249c7dec20aa91818 by Timo Teräs on 2012-02-24T08:13:05Z:

```
pkg: add field for provides as 'p'

ref #574
```

* Revision 99145e2c0dc0b5b3b5a2a72fb1bff140d1f583f3 by Timo Teräs on 2012-02-24T14:31:40Z:

```
all: introduce apk_provides and use it in apk_name

in preparation for provides support. implements also some
dependency satisfaction helper routines.

ref #574.
```

* Revision 12bdec38a376f787a8aa621c965b561387b445ce by Timo Teräs on 2012-02-24T16:29:30Z:

```
solver, dot: elementary provides fixes

implementation is still not near finished, but now at least it
can handle it to a minimum degree. many cases are not done right
yet, though. ref #574.
```

* Revision 1074c4d32680e2a80dc2e2266f8499bbba6acbc0 by Timo Teräs on 2012-02-27T08:26:30Z:

```
solver: have most inherited things per-package and clean ups

Required for provides support as package might be pulled in via
non-primary package name. This allows relatively easily to pass
through inherited flags via the provided names. ref #574.
```

* Revision b7a22e555f7d287edec0ae7c816de16ca74d2941 by Timo Teräs on 2012-02-27T14:35:04Z:

```
solver, test: implements more provides things, add tests

ref #574
```

* Revision 536c21979b59a10592c7be0674be4c88a97e8d83 by Timo Teräs on 2012-02-28T07:39:35Z:

```
solver: allow multiple packages with same virtual provides

ref #574
```

* Revision 179b453ab7cef53104f348c342599b0276233a95 by Timo Teräs on 2012-02-28T08:28:39Z:

```
solver: fix conflicting provides detection

ref #574
```

* Revision 2655d27ea179f365166144677d0a1632dc70e10c by Timo Teräs on 2012-02-28T09:27:17Z:

```
solver: consider provided names also for preference

ref #574
```

* Revision 52dcc2d72d64266246f6d6253b8c9804d4d538c6 by Natanael Copa on 2012-08-16T12:50:06Z:

```
main/abuild: start add 'provides' info

ref #574
```

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