[sucky] Automatic download tool.

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I've just committed a first cut at a tool which can be used to
download and install cclan packages automatically.  It's a hack, but
it's a low-overhead hack that can easily be installed.  Herewith a
list of features/nonfeatures

 * finds package locations by referring to the :(package) link on the
   given cliki page

 * builtin http (almost) client.  Copes with proxies, unless they need
   to be authenticated to

 * attempts to pull detached pgp signatures (foo.asc files) and verify
   them against the download.  probably quite important when your
   download location can be changed by anyone who can edit a cliki page   

 * doesn't yet, however, verify that the package signature is from
   someone whose Lisp you trust, just that you have them on your pgp
   keyring

 * downloads files, sets asdf to compiling them.  chases dependencies
   where the dependencies are not present on the system

 * does/knows absolutely nothing about versions 

 * presently sbcl-only.  requires tar and gpg, but no dependencies on
   any Lisp modules other than thosre that come with sbcl.  not
   elegant, but it can be used to bootstrap a more elegant solution,
   which will probably need more libraries and stuff.

 * Integrated "TODO list" functionality, utilising the Lisp #| |# 
   comment feature to separate the list of outstanding items from the
   actual source code.


Example run, which you need tip-top-brand-new asdf to replicate (it'll
work without, but you get mucho spewage from asdf loading stuff which
is not shown here):

:; ./asdf-install  cliki
Install where?
1) System-wide install: 
   System in #P"/opt/circle-2003-1/lib/sbcl/site-systems/"
   Files in #P"/opt/circle-2003-1/lib/sbcl/site/" 
2) Personal installation: 
   System in #P"/home/dan/.sbcl/systems/"
   Files in #P"/home/dan/.sbcl/site/" 
 --> 2
Downloading 32428 bytes from http://ftp.linux.org.uk/pub/lisp/experimental/cclan/cliki.tar.gz ...
gpg: Signature made Wed Jun  4 01:54:02 2003 BST using DSA key ID 75908913
gpg: Good signature from "Daniel Barlow <[email protected]>"
gpg:                 aka "Daniel Barlow <[email protected]>"
Installing #P"/home/dan/cliki.asdf-install-tmp" in #P"/home/dan/.sbcl/site/",#P"/home/dan/.sbcl/systems/"
cliki/README.cCLan-install
cliki/cliki.asd
[...]
Downloading package NET-TELENT-DATE, required by cliki
Downloading 8326 bytes from http://ftp.linux.org.uk/pub/lisp/experimental/cclan/net-telent-date.tar.gz ...
Install failed due to error:
Cannot verify package signature:  Server responded 404 for GET http://ftp.linux.org.uk/pub/lisp/experimental/cclan/net-telent-date.tar.gz.asc

Suggestions welcome.  Patches for TODO items doubly so.  Find it in
CCLAN cvs as asdf/asdf-install.lisp or on the web at

http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/cclan/asdf/asdf-install.lisp?rev=HEAD&content-type=text/vnd.viewcvs-markup



- -dan

- -- 

   http://www.cliki.net/ - Link farm for free CL-on-Unix resources 
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