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dcore:development [2015/01/13 06:27] – [Package management scripts guide] LichenSymbiontdcore:development [2015/05/21 16:32] (current) – page is replaced by [[dcore:sce-import]]; left un-linked for reference by original author sm8ps
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 ===== Development ===== ===== Development =====
 ==== Package management scripts guide ==== ==== Package management scripts guide ====
-The scripts have quite a lot of fluff, without sufficient explinations.+The scripts have quite a lot of complicated stuff, without sufficient explanations.
 So here is my (LichenSymbiont) guide to the scripts. So here is my (LichenSymbiont) guide to the scripts.
  
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 It also uses some more complex awk programs, so you should learn a bit about the [[http://www.grymoire.com/Unix/Awk.html|Awk language]]. It also uses some more complex awk programs, so you should learn a bit about the [[http://www.grymoire.com/Unix/Awk.html|Awk language]].
 And of course you need to know bash scripting, so here is a [[http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html|guide]]. And of course you need to know bash scripting, so here is a [[http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html|guide]].
 +And understand some pitfalls in Bash (some applicable to Ash): [[http://mywiki.wooledge.org/BashPitfalls|Bash Pitfalls]].
  
-**Starting with a general outline:**+** First a quick summary of the most important parts of the scripts: ** 
 + 
 +importsce is the command-line package manager (script), which calls deb2sce for getting the .deb files, and collecting them into the .sce package. 
 +It also calls the update function for the indices of Debian packages (debGetEnv). 
 + 
 +As you should expect, it must handle the regular Debian and Ubuntu package repository mirrors. 
 +Beyound that, it also downloads the dCore specific dependencies, and excluded packages, for the .deb packages (contained in /dCore/$build/import/deb2sce.tar.gz on the FTP). 
 +It also contains specific packages compiled for dCore (fltk library, flwm_topside and others). 
 + 
 +The scripts are complicated, unless you have a desire to learn, a good general understanding, and/or at least study them consistently. 
 + 
 +**SCE packages:**
  
 A sce package is a [[http://squashfs.sourceforge.net/|SquashFS]] file, which can compress data using multiple compression algorithms. A sce package is a [[http://squashfs.sourceforge.net/|SquashFS]] file, which can compress data using multiple compression algorithms.
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 But you can add new files to an already created file-system. Read about it [[http://www.tldp.org/HOWTO/html_single/SquashFS-HOWTO/|Here]]. But you can add new files to an already created file-system. Read about it [[http://www.tldp.org/HOWTO/html_single/SquashFS-HOWTO/|Here]].
 This allows for the creation of SquashFS files that stores all your favorite programs, in one file, by just incrementally adding them (this is not a feature of importsce yet). This allows for the creation of SquashFS files that stores all your favorite programs, in one file, by just incrementally adding them (this is not a feature of importsce yet).
 +
 +Then sce packages are mounted as [[https://en.wikipedia.org/wiki/Loop_device|loop-devices]] through loadsce (which just uses "mount -t squashfs -o loop..."), and located in the file-system at /tmp/tcloop/.
 +loadsce also loads all the dependencies of a package.
  
 ** importsce: ** ** importsce: **
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