[plt-scheme] Problems and Questions converting to PLaneT

The problem seems to stem from the interactions between paths and strings.

 

The Language Manual says: When a MzScheme procedure takes a filesystem path
as an argument, the path can be provided either as a string or as an
instance of the path datatype. If a string is provided, it is converted to a
path using string->path. A MzScheme procedure that generates a filesystem
path always generates a path value.

 

However this isn't true for path->string, for example.  One might expect
that (path->string "abc") to return "abc".  Instead it errors.  I believe
that was the root cause of the problem below.  A routine somewhere - I quit
when I got to a thread invoking a unit in the package installer module (it
was getting a bit deep for me) - just wanted to use the string version of a
path that was already a string.

 

Doug

 

  _____  

From: plt-scheme-bounces at list.cs.brown.edu
[mailto:plt-scheme-bounces at list.cs.brown.edu] On Behalf Of Williams, M.
Douglas
Sent: Tuesday, December 27, 2005 1:14 PM
To: plt-scheme
Subject: RE: [plt-scheme] Problems and Questions converting to PLaneT

 

I got it to work by changing the compile-subcollections in my info.ss file
to a list of list of paths.  The info.ss file is now:

 

(module info (lib "infotab.ss" "setup")

  (define name "PLT Scheme Science Collection")

  (define blurb

    (list "A collection of modules that provide functions for "

          "numerical computing."))

  (define categories '(scientific))

  (define doc.txt "doc.txt")

  (define primary-file "science-with-graphics.ss")

  (define version "2.0")

  (define compile-subcollections

    (list (list (string->path "special-functions"))

          (list (string->path "random-distributions"))))

)

 

This will correctly build the .plt and I can install it using the planet
command line.

 

Now I just need to know if there is a convenient way to compile it - i.e.
something similar to compile-collection-zos when something isn't actually in
the collection path.

 

  _____  

From: plt-scheme-bounces at list.cs.brown.edu
[mailto:plt-scheme-bounces at list.cs.brown.edu] On Behalf Of Williams, M.
Douglas
Sent: Tuesday, December 27, 2005 10:53 AM
To: plt-scheme
Subject: [plt-scheme] Problems and Questions converting to PLaneT

 

Problems and Questions converting to PLaneT - or why Jacob Matthews dreads
seeing my name in the From field of a post.

 

I am trying to get the PLT Scheme Science Collecting ready to distribute
using PLaneT and I am running into a few problems.  

 

The science collection is a collection of modules plus two sub collections
(special-functions and random-distributions).  The directory structure is:

 

  science

    - <many files with scheme modules, including science.ss and
science-with-graphics.ss>

    - info.ss

    - doc.txt

    - special-functions

        - <several files with scheme modules>

        - info.ss

    - random-distributions

        - <many files with scheme modules>

        - info.ss

 

When this is in a collects directory (and the directory is in the
collections path), I can easily compile the collection (using
compile-collection-zos) and otherwise manipulate it using tools within PLT
scheme.

 

In preparation to move to PLaneT, I have moved the code out of a collects
directory (that is, the directory is not in the collections path).  Now the
questions.

 

---

 

What is the best way to compile the collection (and subcollections) the way
compile-collection-zos does?  Or, does PLaneT automatically compile the
collection for me?  (I haven't been able to get that far.)

 

---

 

In any case, I should be able to build the .plt file for distribution with
PLaneT.  I used make-planet-archive to create a plt file.  This seems to
work okay.  (I assume that 'planet --create-archive ...' would have done the
same thing.)

 

When I try to install it using 'planet --file science.plt williams 2 0', I
get the following error:

build-path: expects type <path, string, 'up, 'same> as 2nd argument, given:
("sp

ecial-functions"); other arguments were: #<path:C:\Documents and
Settings\willia

msm\Application Data\PLT Scheme\planet\300\300\cache\willi...

 

Note that I cannot remove the package at this point.  In particular, 'planet
--remove williams science.plt 2 0' gives the following:

build-path: expects type <path, string, 'up, 'same> as 2nd argument, given:
("sp

ecial-functions"); other arguments were: #<path:C:\Documents and
Settings\willia

msm\Application Data\PLT Scheme\planet\300\300\cache\willi...

with-input-from-file: cannot open input file: "C:\Documents and
Settings\william

sm\Application Data\PLT Scheme\cache.ss" (The system cannot find the file
specif

ied.; errno=2)

 

Both seem to be referring to one of the subcollections (in particular,
special-functions).

 

My info.ss file is as follows:

(module info (lib "infotab.ss" "setup")

  (define name "PLT Scheme Science Collection")

  (define blurb

    (list "A collection of modules that provide functions for "

          "numerical computing."))

  (define categories '(scientific))

  (define doc.txt "doc.txt")

  (define primary-file "science-with-graphics.ss")

  (define version "2.0")

  (define compile-subcollections

    (list (list "special-functions") (list "random-distributions")))

)

 

At first I suspected the compile-subcollections might be handled differently
for PLaneT (i.e. not a list of list of strings) so I changed its value to
(list "special-functions" "random-distributions").  This also fails with:

path->string: expects argument of type <path>; given "special-functions"

 

But, that might help anyway.

 

---

 

Am I doing something wrong or is this a bug?

 

---

 

Just out of curiosity, why is the order of the arguments to the --file
option different from the others with similar arguments (-- install,
--download, and  --remove)?

 

Thanks for the help.

 

Doug

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