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08:32 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/AV_LbQ
08:32 RacketCommitBot: racket/master 3e5a9ca Robby Findler: unbreak check syntax...
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13:46 shriphani_: Hi. I am sure I am reading the docs incorrectly and I might come off as stupid asking this. I have the following two files and I am trying to use the first one as a #lang language. What is wrong here?: http://pastebin.ca/2307844 and http://pastebin.ca/2307846
13:46 mithos28: shriphani_: What is the error you get?
13:47 jonrafkind: you need (require "shriphani.rkt")
13:47 jonrafkind: instead of #lang shripani
13:47 mithos28: jonrafkind: Not if he/she is trying to use it as #lang language
13:48 jonrafkind: thank you for enlightening me
13:48 shriphani_: mithos28: http://pastebin.ca/2307847
13:48 shriphani_: but the path adds up.
13:48 shriphani_: i mean shriphani.rkt is still in /tmp
13:49 jonrafkind: shriphani_, also it should be @title{Firdaus} you dont need the quotes in there
13:49 shriphani_: Won't it still work ?
13:49 jonrafkind: yea it will
13:49 shriphani_: I have `(h1 ,s)
13:49 mithos28: Ok, so the first issue is that you cannot use arbitrary paths after #lang at-exp
13:49 mithos28: try using #lang at-exp reader "your-file.rkt"
13:50 shriphani_: mithos28: but there's a wikipedia snippet doing what I did (but with s-exp).
13:50 mithos28: shriphani_: That is a key difference
13:50 jonrafkind: shriphani_, http://pastebin.ca/2307849
13:51 shriphani_: mithos28: read-syntax: cannot find reader for `#lang reader "shriphani.rkt"'
13:52 mithos28: Interesting
13:53 mithos28: It looks like that is because at-exp is 'broken'
13:54 shriphani_: ....
13:54 mithos28: It reads the rest of the line instead of just the next object
13:54 jonrafkind: shriphani_, did that work
13:56 shriphani_: jonrafkind: I really wanted to use my own #lang (as a reading exercise + for learning more).
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13:58 shriphani_: mithos28: how does scribble build then ?
13:58 jonrafkind: ok then you have to create a directory called 'shriphani' that contains main.rkt which exports all the proper bindings to make a racket program work (like #%top, #%app, #%module-begin, etc). you can just re-export racket for now. then you need a lang/ directory with a reader.rkt file in there that specifies how to read the language
13:58 jonrafkind: you can use submodules instead of making all those different files too
13:58 mithos28: shriphani_: It is broken in the sense that it doesn't work with chained module readers
13:59 mithos28: so #lang at-exp module-path works
13:59 jonrafkind: then do PLT_COLLECTS_PATH=/path/to/shripani:$PLT_COLLECTS_PATH
13:59 mithos28: but #lang at-exp reader module-path doesn't
13:59 mithos28: follow jonrafkind's instructions for a way to use the first syntax
14:02 mithos28: shriphani_: What was the first line of your file when you got read-syntax: cannot find reader for `#lang reader "shriphani.rkt"'
14:02 shriphani_: racket@shriphani.rkt> ,enter "/tmp/test-shriphani.rkt"
14:02 shriphani_: read-syntax: cannot find reader for `#lang reader "shriphani.rkt"'
14:04 mithos28: the at-exp reader is working for me
14:05 mithos28: actually I think you want #lang at-exp s-exp "shriphani.rkt"
14:07 shriphani_: racket@> ,enter "/tmp/test-shriphani.rkt"
14:07 shriphani_: in: (module test-shriphani "shriphani.rkt" (#%module-begin (title "Firdaus")))
14:07 shriphani_: errortrace...:
14:07 shriphani_: .....
14:07 shriphani_: is it geiser ?
14:07 mithos28: I don't use geiser
14:08 mithos28: what is the actual error
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14:08 mithos28: since you should still be getting an error
14:09 mithos28: because your "shriphani.rkt" file is not a real language file yet
14:09 mithos28: languages need to provide #%app and #%module-begin
14:09 shriphani_: http://pastebin.ca/2307855
14:09 shriphani_: that is the full error..
14:09 mithos28: The easiest way to do that is to (provide (all-from-out racket))
14:10 mithos28: yep, thats what I was hoping for
14:10 mithos28: so add the provide to "shriphani.rkt" and see if it goes away
14:12 shriphani_: yup that works.
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14:22 Fare: is there a webpage for the highschool teaching thing?
14:22 Fare: the old bootstrap camp page looks like it's down.
14:22 mithos28: http://www.bootstrapworld.org/
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17:10 bremner: is there a way to update the collects path from within a racket module?
17:12 mithos28: rudybot: doc current-library-collection-paths
17:12 rudybot: mithos28: your lazy sandbox is ready
17:12 rudybot: mithos28: http://docs.racket-lang.org/reference/collects.html#(def._((quote._~23~25kernel)._current-library-collection-paths))
17:13 mithos28: bremner: Is that what you want?
17:14 bremner: mithos28: OK, but if I parameterize that, inside the body of the parameterize, certain things (like require) don't work anymore.
17:15 mithos28: If you change the collects path, wouldn't you expect require to not work
17:15 mithos28: Maybe if you could give more details on what you want
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17:17 bremner: I have a local collects directory, I want to be able to use it in scripts without updating PLTCOLLECTS.
17:17 bremner: or giving the interpreter the path on the command line.
17:17 mithos28: Do you want raco pkg then?
17:18 didi: Does Racket have support for unix domain sockets?
17:18 mithos28: That can set up a separate root collection directory
17:18 didi: bremner: raco link
17:18 bremner: mithos28: no, I don't think so. I just want to be able to run scripts from within drracket/geiser that use the local collection.
17:18 mithos28: didi: right, raco link not raco pkg
17:19 bremner: if you know perl, I want the equivalent of 'use lib "./collects";'
17:19 mithos28: don't know perl
17:19 mithos28: can you explain why raco link doesn't work better
17:19 bremner: because it doesn't work in a repl?
17:19 mithos28: it does
17:19 bremner: oh. OK.
17:20 mithos28: it sets up installation wide stuff
17:20 mithos28: didi: I don't think so about sockets
17:20 bremner: hmm. It still isn't local to a script. But I guess that is just hard for some reason...
17:21 mithos28: bremner: If you want it local to a script, why doesn't current-library-collection-paths work
17:21 bremner: mithos28: probably I am just incompetant. Can you show me an example?
17:22 mithos28: (current-library-collection-paths (cons "new directory" (current-library-collection-paths)))
17:22 mithos28: then future requires will also look in there
17:22 bremner: oh.
17:22 mithos28: also you can use parameterize if you want it more scoped
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17:22 bremner: yes, I tried parameterize first, but that is too restrictive I think.
17:23 bremner: I don't know why I didn't pull that out of the docs.
17:26 bremner: mithos28: thanks, that seems to work.
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18:35 didi: mithos28: Aw, that's unfortunate. I found a message on the mailing list from 2007 about it.
18:37 didi: There is a socket package on Planet, but it is not working for me here.
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18:39 didi wonders about writing one
18:40 neilv: looks like the db package uses the ffi for unix domain sockets
18:42 neilv: your best bet is to ask on the email list. unix domain sockets would be good functionality to have in the standard library of racket
18:43 neilv: ok, i see the 2007 emails. looks like it was seen as a relatively low priority
18:44 neilv: but since then ryanc has implemented something for the db package
18:49 bremner: can anyone explain why this runs fine in DrRacket, but "racket file.rkt" doesn't seem to use the collection-path: http://paste.debian.net/229451/
18:49 didi: neilv: What about asking ryanc to port the implementation to core Racket?
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18:50 mithos28: bremner: I'm guessing it is something to do with when the require does the lookup
18:50 mithos28: what happens when you raco make it?
18:51 bremner: mithos28: it odesn't compile
18:51 bremner: * doesn't
18:51 didi: People seemed a little reluctant to make it core Racket in 2007, though.
18:51 neilv: didi: you could ask on the email list about unix domain socket, and mention the existing code in the db collection. or i guess you could ask ryanc what he thought about the idea first
18:51 mithos28: ah, because drracket probably didn't properly sandbox your code
18:52 mithos28: what happens if you run it in a fresh drracket?
18:53 bremner: works
18:53 mithos28: Interesting, throws out that hypothesis
18:53 mithos28: so you at least need to do it in phase one
18:53 didi: neilv: OK, I'll write to the mailing list.
18:54 mithos28: can you try duplicating it and adding (begin-for-syntax …) around one of them
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18:54 bremner: around the require?
18:54 mithos28: no, the setting of the current-library-collection-paths
18:54 bremner: ok.
18:56 bremner: current-library-collection-paths: unbound identifier in the transformer environment;
18:56 bremner: also, no #%app syntax transformer is bound in: current-library-collection-paths
18:57 mithos28: you'll need (require (for-syntax racket/base))
18:57 mithos28: or #lang racket instead of #lang racket/base
19:00 bremner: ah, that seems to do it, after making sure local-collects is also defined for-syntax.
19:01 mithos28: yeah, because it will try to load the module at phase 1 looking for macros and so it needs to know about where they sould be
19:01 mithos28: I think it is actually a bug that it worked in DrRacket
19:02 bremner: yes, that makes sense.
19:02 bremner: it works in geiser too, but I know geiser does funny things with module loading.
19:03 bremner: mithos28: do you think that is a bug worth reporting? I'm not sure I can write a good bug report.
19:04 bremner: I guess I can report that DrRacket and the command line are inconsistent.
19:04 mithos28: I think you should report it, matthew should be able to figure out why the phases aren't seperate
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19:18 bremner: darn. As soon as I look at the reported bug I can see it is invalid.
19:18 bremner: Can I close a bug that I submitted?
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19:19 mithos28: bremner: I don't think so, why is it invalid?
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21:29 offby1: no, it must persist indefinitely, reminding the world of your failure
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21:35 didi: offby1: Are we still talking about bug reports or the Internet?
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21:39 offby1: I was.  yes, I know it was two hours ago.
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