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== Abstract == | == Abstract == | ||
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This document attempts to design a solution for this. | This document attempts to design a solution for this. | ||
The main idea is to | The main idea of the solution is to keep database files with each package location | ||
and dependencies, and allow for the merge of such files. | |||
To allow reinstallation of the packages, we propose to keep the source of the package. | |||
This would also make it easier to run the tests of packages. | |||
packages | |||
== Rationale == | == Rationale and examples == | ||
This design is meant to | This design is meant to allow the following: | ||
* | * keeping multiple versions of the same package installed and load a specific one | ||
* keep multiple versions of Octave in | * keep packages installed for multiple versions of Octave, specially in the case of | ||
* | .oct files which need to be rebuilt for each octave function | ||
* | * reinstall a package from its cache after installing new octave version | ||
* | * run the tests from packages (find tests in .cc sources) | ||
* | * clean the package cache | ||
* usage of alternate database files | |||
* usage of packages in remote directories which may not be available at all | |||
times | |||
=== Case 1 === | |||
== | |||
Denise installs Octave 3.4.3 and installs the latest version of the financial (1.0.4) and | Denise installs Octave 3.4.3 and installs the latest version of the financial (1.0.4) and | ||
image (2.0.0) package with "pkg install -forge financial image". After installing the packages, | image (2.0.0) package with "pkg install -forge financial image". After installing the packages, | ||
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tests in the package (using the cached package to run the tests in the .cc files). | tests in the package (using the cached package to run the tests in the .cc files). | ||
Later, Denise installs Octave 3.6.2 but keeps the previous version of Octave on the | Later, Denise installs Octave 3.6.2 but keeps the previous version of Octave on the | ||
system since some of her old code no longer runs correctly. Loading the financial | system since some of her old code no longer runs correctly. Loading the financial | ||
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While using Octave 3.6.2, Denise installs the new version of the package | While using Octave 3.6.2, Denise installs the new version of the package | ||
"pkg install -forge financial". The files for the previous version of the package | "pkg install -forge financial". The files for the previous version of the package | ||
are kept | are kept altough "pkg load financial" will only load the latest version. However, when | ||
Denise is using Octave 3.4.3, as financial 1.2.0 requires Octave 3.6.0, pkg load | Denise is using Octave 3.4.3, as financial 1.2.0 requires Octave 3.6.0, pkg load | ||
will only load financial 1.0.4. | will only load financial 1.0.4. | ||
=== | === Case 2 === | ||
Owen is stuck using the financial package 1.0.4 because some of his code no | Owen is stuck using the financial package 1.0.4 because some of his code no | ||
longer works in the latest versions. However the latest version of financial | longer works in the latest versions. However the latest version of financial | ||
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while "pkg load financial" always loads the latest version of the package. | while "pkg load financial" always loads the latest version of the package. | ||
=== | === Case 3 === | ||
Lisa is using Octave in a remote machine on the biochemistry department. The | Lisa is using Octave in a remote machine on the biochemistry department. The | ||
system administrator installed Octave 3.6.2, signal package 1.2.0, and | system administrator installed Octave 3.6.2, signal package 1.2.0, and | ||
general 1.0.0. | general 1.0.0. Lisas uses all of them but she also requires the image package. | ||
However, the system administrator does not have time to access security issues | However, the system administrator does not have time to access security issues | ||
with the package and tells her to install that package locally. She runs "pkg | with the package and tells her to install that package locally. She runs "pkg | ||
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When Octave 3.6.3 is released, Lisa wants to use the new version since it fixes | When Octave 3.6.3 is released, Lisa wants to use the new version since it fixes | ||
one bug that has been | one bug that has been aanoying her for a long time but the system administrator | ||
does not want to make the update and tells her to build it herself locally | does not want to make the update and tells her to build it herself locally | ||
=== | === Case 4 === | ||
Diana is a student that wants to run her code in the departmental cluster. However, | Diana is a student that wants to run her code in the departmental cluster. However, | ||
the system does not have an installation of Octave and she needs to install it on | the system does not have an installation of Octave and she needs to install it on | ||
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to her own list of available packages. which she can load. | to her own list of available packages. which she can load. | ||
=== | === Case 5 === | ||
John is a professor of biomechanics and uses Octave on his classes. Most of the | John is a professor of biomechanics and uses Octave on his classes. Most of the | ||
exercises he gives to the class require the use of multiple packages in Octave | exercises he gives to the class require the use of multiple packages in Octave | ||
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metapackage for his student listing all required packages. The students install | metapackage for his student listing all required packages. The students install | ||
it with "pkg install -url path-to-his-metapackage". The metapackage has no file | it with "pkg install -url path-to-his-metapackage". The metapackage has no file | ||
it simply lists a bunch of package | it simply lists a bunch of package has dependencies. Since pkg solves this | ||
dependencies automatically, a message showing which packages will be installed | dependencies automatically, a message showing which packages will be installed | ||
is displayed before doing it. | is displayed before doing it. | ||
= | === Where to install things === | ||
== Where to install things == | |||
These should not be hardcoded and taken from octave_config_info. There's many paths there whose purpose is explained on octave sources [http://hg.savannah.gnu.org/hgweb/octave/file/default/build-aux/common.mk buil-aux/common.mk] (see the ''Where To Install Things'' and ''Octave-specific directories'' sections on that file.) | These should not be hardcoded and taken from octave_config_info. There's many paths there whose purpose is explained on octave sources [http://hg.savannah.gnu.org/hgweb/octave/file/default/build-aux/common.mk buil-aux/common.mk] (see the ''Where To Install Things'' and ''Octave-specific directories'' sections on that file.) | ||