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So, I have been going over how "class config" works in portage, but I am |
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still unsure of where to fit in the changes I would need. |
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I suppose I'll lay out the structure of what I had in mind and ask y'all |
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for advice. |
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Compression would be supported in a modular fashion. The following |
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config options would be supported for each type of compression: |
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ZEXT - the compression filename extension |
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TZEXT - the binary package filename extension |
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ZCOMPRESS - the command used to compress a file |
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ZDECOMPRESS - the command used to uncompress a file |
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ZFILTER - command used to compress in a pipeline |
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ZUNFILTER - command used to uncompress in a pipeline |
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ZRECOMPRESS - should files already compressed using another method be |
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uncompressed and then recompressed using the preferred method? (ie, if |
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manpages are shipped as foo.1.gz and you want foo.1.bz2) |
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For example, if Z="bzip2", a file would be sourced ("bzip2.sh"), which |
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would contain the these settings: |
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ZEXT="bz2" |
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TZEXT="tbz2" |
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ZCOMPRESS="bzip2" |
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ZDECOMPRESS="bunzip2" |
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ZFILTER="bzip2" |
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ZUNFILTER="bunzip2" |
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ZRECOMPRESS="no" |
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The following subsystems would "source" one of these files to get their |
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settings: |
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PKG_ |
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DOC_ |
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MAN_ |
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INFO_ |
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possibly others. |
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So, if PKG_Z="bzip2", bzip2.sh would be read to set PKG_ZEXT, PKG_TZEXT, |
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PKG_ZCOMPRESS, etc. |
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So, if you wanted everything on your system to use bzip2 compression, |
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you would set: |
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Z="bzip2" |
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in make.conf. All of the subsystems would fall in line with this default, |
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top-level setting. |
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If you wanted gzipp'ed packages and lzop'ed man pages, but wanted |
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everything else bzip2, you would do this: |
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Z="bzip2" |
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PKG_Z="gzip" |
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MAN_Z="lzop" |
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So, PKG_ZEXT, PKG_ZCOMPRESS, etc would all be set using gzip.sh, and |
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MAN_ZFILTER, MAN_ZRECOMPRESS, etc would all be set using lzop.sh. |
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As these module files are sourced, individual config options could be |
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overridden via values in the environment. For example, if I wanted gzip |
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used across the board, but I wanted different levels of compression for |
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man pages and packages, I could do this in make.conf: |
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Z="gzip" |
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PKG_ZCOMPRESS="gzip --best" |
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MAN_ZCOMPRESS="gzip --fast" |
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ideas? |
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-jason pepas |
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-- |
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