- Snow-users-list - mailman.iro.umontreal.ca

Google Summer of Code
by Marc Feeley 16 Mar '08

16 Mar '08

Hello Gambit and Snow users. I will be applying to the Google Summer of Code program as a mentoring organization and propose projects for advancing the development of Gambit, Snow, and Termite. I'd like to start a collective brainstorming exercice to come up with a list of specific projects. If you are interested in participating as a student, please respond to this message (preferably on the mailing list). Please describe briefly what you would like to work on. If you cannot participate (e.g. you are not a student) but have project suggestions, then please speak up on the mailing list. Some projects ideas that come to mind: - native thread support - real-time/parallel GC - closer integration of Termite and Gambit - Gambit packages - web framework - documentation - François Pinard's projects (see MSLUG mailing-list archive) Marc

4 6

[ANN] Release of generic Snow v1.1.2
by Marc Feeley 14 Mar '08

14 Mar '08

Generic Snow v1.1.2 has just been released and is available on the snowfort. For installation instructions just visit: http://snow.iro.umontreal.ca/?tab=Installing This release fixes the self test of the current-time-seconds function which was tested with a range whose upper limit expired a few weeks ago. Marc

1 0

Re: [Snow-users-list] Snow-users-list] Difficulties on Gambit
by Marc Feeley 13 Mar '08

13 Mar '08

On 13-Mar-08, at 9:40 AM, Joel J. Adamson wrote: > I'd be very interested to know where the bug is (was), since by > chance I > have been studying main.scm for a couple days now. You can view the change using the online changelog: http://www.iro.umontreal.ca/~gambit/repo/gambit/?diff/b7e81a590a88/gsi/main… Basically, the (set! wrap-program ...) has to be changed to (set! c#wrap-program ...) . Marc

1 0

Snow-users-list] Difficulties on Gambit
by Matthew Martin 13 Mar '08

13 Mar '08

On Wed, Mar 12, 2008 at 9:26 AM, Joel J. Adamson <jadamson(a)partners.org> wrote: > "Matthew Martin" <matt.a.martin(a)gmail.com> writes: > > > On Tue, Mar 11, 2008 at 2:56 PM, Joel J. Adamson <jadamson(a)partners.org> wrote: > > > > That's an old problem... kinda surprised it's still there. > > > I know there was discussion of it on the list (I checked the archives). > This was in a download of snow-generic from the main download page. Is > there a VC repository somewhere? I'm not sure. > > > > 2 things. > > > > 1) It's "srfi1", not "srfi-1". However, it should simply reply with > > "Snowfort does not contain package srfi-1." > > -------------------------------------------- > > Martin@Deimos $ snowman install srfi-1 > > Snowfort does not contain package srfi-1. > > --------------------------------------------- > > (the above is using mzscheme) > > Yeah, I get exactly the same message when I try any snowman command. I > just tried it with those environment variables, and I get the same thing. > > > > 2) I get the same error you did when I try 'env SNOW_HOST=gambit > > snowman install srfi-1' or 'env SNOW_HOST=gambit snowman install > > srfi1'. gsi is also in my $PATH. > > > > It would seem the immediate solution is to try a different Scheme > > implementation for the time being until someone more knowledgeable > > responds. > > I'd love to take your suggestion, but I'm hooked on Gambit ;) > > Here's what happens if I try guile: > ,---- > | > | /home/joel/lisp/scm/.snow: Zshell> SNOW_HOST=guile snowman install srfi1 > | ERROR: In procedure scm_lreadr: > | ERROR: #<unknown port>:5:220: illegal character in escape sequence: #\3 > `---- Same here on Guile 1.8.3 : ----------------------------------------------------------------- Deimos $ SNOW_HOST=guile snowman install srfi1 ERROR: In procedure scm_lreadr: ERROR: #<unknown port>:5:220: illegal character in escape sequence: #\3 ------------------------------------------------------------------ And on Chicken v. 2.608 - netbsd-unix-gnu-x86 I get: ------------------------------------------------------------------- Martin@Deimos $ SNOW_HOST=chicken snowman install srfi1 Warning: undefined escape sequence in string - probably forgot backslash ? in line 5 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\2 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\2 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\2 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 21 #\2 Warning: undefined escape sequence in string - probably forgot backslash ? in line 39 #\3 Warning: undefined escape sequence in string - probably forgot backslash ? in line 39 #\2 srfi1/v1.0.16/snow/srfi-1-reference.scm -- invalid signature by: ("Jeremie Lasalle Ratelle <pouexmachinax at gmail.com>") srfi1/v1.0.16/snow/srfi-1-tests.scm -- invalid signature by: ("Jeremie Lasalle Ratelle <pouexmachinax at gmail.com>") srfi1/v1.0.16/snow/srfi1.scm -- invalid signature by: ("Jeremie Lasalle Ratelle <pouexmachinax at gmail.com>") Package srfi1/v1.0.16 failed verification. The verification may succeed if one of the following certificates is imported: 1) "Jeremie Lasalle Ratelle <pouexmachinax at gmail.com>" fingerprint: c113604551030ec83b040dd737fad9bb purpose: (snow) authenticity: *** not signed *** ASCII: 2VydC12MQoiSmVyZW1pZSBMYXNhbGxlIFJhdGVsbGUgPHBvdWV4bWFjaGluYXggYXQgZ21haWwuY29tPiIKKCJSMkFEUXc9PSIgIlNVRTJ3dz09IikKKHNub3cpCig1MTIgIkFjTmtENk5uRzNjMHNNODRONUZYMWRxakJ0T1owWVZlNFd5TUZTTXdBbWVsM0dhNXlTNFB4cnBOYjVXLzBVcERxc0ZVTlhjdFpXdUgzeWFjdG5ESUYrYz0iICJBUUFCIikKI2YK Deimos $ ------------------------------------------------------------------------------ (the invalid signature stuff is OK, I just havn't imported his key).

4 8

Difficulties on Gambit
by jadamson＠partners.org 12 Mar '08

12 Mar '08

Dear Snow-List, I installed snow-generic today on Slackware 12.0 with both Guile and Gambit-C 4.2.2. 1) I had to change: ,---- | (let* ((range-lo (string->bignum "1168000000")) | (range-hi (string->bignum "1200000000")) | (s start-time)) | (if (not (and (bignum>= s range-lo) (bignum<= s range-hi))) | (failed `(and (bignum>= ,s ,range-lo) (bignum<= ,s ,range-hi))))) `---- to ,---- | (let* ((range-lo (string->bignum "1168000000")) ==> (range-hi (string->bignum "1210000000")) | (s start-time)) | (if (not (and (bignum>= s range-lo) (bignum<= s range-hi))) | (failed `(and (bignum>= ,s ,range-lo) (bignum<= ,s ,range-hi))))) `---- otherwise I got "None of the installed Scheme implementations support Scheme Now!" 2) When I try to install a package, this is what I get: ,---- | /home/joel/lisp/scm/.snow/current/bin: Zshell> snowman install srfi-1 | *** WARNING -- Variable "_" used in module "extio.o1" is undefined | *** WARNING -- Variable "define*" used in module "extio.o1" is undefined | *** WARNING -- Variable "extio/v1.0.3" used in module "extio.o1" is undefined | *** WARNING -- Variable "i/o" used in module "extio.o1" is undefined | *** WARNING -- Variable "lgpl/v2.1" used in module "extio.o1" is undefined | *** WARNING -- Variable "obj" used in module "extio.o1" is undefined | *** WARNING -- Variable "package*" used in module "extio.o1" is undefined | *** WARNING -- Variable "port" used in module "extio.o1" is undefined | *** WARNING -- Variable "snow" used in module "extio.o1" is undefined | *** WARNING -- Variable "snow-force-output" used in module "extio.o1" is undefined | *** WARNING -- Variable "snow-pretty-print" used in module "extio.o1" is undefined | *** ERROR IN | extio.o1| -- Operator is not a PROCEDURE | (#!unbound #!unbound) | /home/joel/lisp/scm/.snow/current/bin: Zshell> `---- This is with gsi in my $PATH. Please let me know where to start. Thanks, Joel -- Joel J. Adamson Biostatistician Pediatric Psychopharmacology Research Unit Massachusetts General Hospital Boston, MA 02114 (617) 643-1432 (303) 880-3109 The information transmitted in this electronic communication is intended only for the person or entity to whom it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this information in error, please contact the Compliance HelpLine at 800-856-1983 and properly dispose of this information.

3 3

Another snowball, another categorical question.
by Matthew Martin 11 Mar '08

11 Mar '08

Wrapped up match.scm from http://synthcode.com/scheme/ as a snowball, but what category? It is "A fully portable hygienic pattern matcher backwards compatible with Andrew Wright's MATCH syntax.". I was thinking of a category something like 'syntax', would that make sense? There's also some other code there I'm thinking of making into snowballs at some point as well, like loop and gettext, but those would take me quite some time. I have to figure out how loop is organized, and the gettext code has a lot of Gauche-specific stuff. Glancing at it I'm pretty sure most if not all of its Gauche dependencies can replaced with existing snowballs though. I suppose loop would go in the same category as match, and gettext seems to obviously fit in the 'text' category, and/or an i18n category. But right now I'm working on other things. Also, the pregexp snowball actually works now... oops.

2 1

Ok, how about this one? (Levenshtein Distance Metric in Scheme)
by Matthew Martin 29 Fév '08

29 Fév '08

>From http://www.neilvandyke.org/levenshtein-scm/ "This is a Scheme implementation of the Levenshtein Distance algorithm, which is an edit distance metric of string similarity. The Levenshtein Distance is a function of two strings that represents a count of single-character insertions, deletions, and substitions that will change the first string to the second. The algorithm is due to Vladimir Levenshtein. More information is available in [DADS] and [Gilleland]." It's ready to go, but I havn't a clue what a sensible keyword(s) would be?

2 1

Pregexp.scm
by Bradley Lucier 29 Fév '08

29 Fév '08

> Message: 7 > Date: Thu, 28 Feb 2008 00:43:47 -0500 > From: Marc Feeley <feeley(a)iro.umontreal.ca> > Subject: Re: [Snow-users-list] About ready to upload pregexp, but one > more question. > To: Matthew Martin <matt.a.martin(a)gmail.com> > Cc: snow-users-list(a)iro.umontreal.ca > Message-ID: <0C5FE87E-0623-4BC0-A1C0-B65AD337BE7B(a)iro.umontreal.ca> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes > > > On 28-Feb-08, at 12:34 AM, Matthew Martin wrote: > >> But I was wondering, what category should it be? Do I need >> to use one that exists, or could I do something like >> (keywords: textproc)? > > I guess "parsing" is the best existing category. But in general, you > can create a new category if none fits. I think that regular expression engines form a category in themselves. Brad

3 2

About ready to upload pregexp, but one more question.
by Matthew Martin 28 Fév '08

28 Fév '08

I still havn't heard back from Dorai so I'm going to go ahead and upload it. I suppose I'll just use (license: see-COPYING) But I was wondering, what category should it be? Do I need to use one that exists, or could I do something like (keywords: textproc)? Also I've noticed I've been top posting, sorry about that.

3 2

New maintainer
by Marc Feeley 28 Fév '08

28 Fév '08

I am pleased to announce that Jeremie Lasalle Ratelle has agreed to help maintain Snow. As you know I have not had as much time as I would have liked to spend on developing Snow further. Jeremie will bring a fresh look to the project. Marc

2 1