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[Last CfPart] ELS 2026, 19th European Lisp Symposium
by Didier Verna 10 May '26

10 May '26

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19th European Lisp Symposium Call for Participation May 11-12 2026 Skład Długa, Kraków, Poland https://www.european-lisp-symposium.org/2026 Sponsored by Keepit and SISCOG ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Important News ~~~~~~~~~~~~~~~ - Programme and remote attendance instructions now available - Keynotes announced Lambda: the Ultimate Paradigm -- François-René Rideau, Gerbil Scheme McCLIM and ECL -- Daniel Kochmański Important Dates ~~~~~~~~~~~~~~~ - Symposium: May 11-12 2026 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Programme Chair ~~~~~~~~~~~~~~~ Mark Evenson, ABCL.org, Austria Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Alan Ruttenberg, USA Dave Cooper, Genworks, USA Dimitris Vyzovitis, Mighty Gerbils Eitaro Fukamachi, Japan Jason Hemann, Seton Hall University, USA Kristopher Micinski, Syracuse University, USA Marc Battyani, Enfabrica, USA Mark David, USA Michael Raskin, LaBRI, France Robert Goldman, SIFT, USA Thomas de Grivel, France Local Chairs ~~~~~~~~~~~~ Wojciech Gac, Keepit, Poland Michał Herda, Keepit, Poland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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[CfPart] ELS 2026, the 19th European Lisp Symposium
by Didier Verna 07 Apr '26

07 Apr '26

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19th European Lisp Symposium Call for Participation May 11-12 2026 Skład Długa, Kraków, Poland https://www.european-lisp-symposium.org/2026 Sponsored by Keepit and SISCOG ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Important News ~~~~~~~~~~~~~~~ - Registration is now open - Keynotes announced Lambda: the Ultimate Paradigm -- François-René Rideau, Gerbil Scheme McCLIM and ECL -- Daniel Kochmański Important Dates ~~~~~~~~~~~~~~~ - Early Registration Deadline: May 03 2026 - Symposium: May 11-12 2026 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Programme Chair ~~~~~~~~~~~~~~~ Mark Evenson, ABCL.org, Austria Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Alan Ruttenberg, USA Dave Cooper, Genworks, USA Dimitris Vyzovitis, Mighty Gerbils Eitaro Fukamachi, Japan Jason Hemann, Seton Hall University, USA Kristopher Micinski, Syracuse University, USA Marc Battyani, Enfabrica, USA Mark David, USA Michael Raskin, LaBRI, France Robert Goldman, SIFT, USA Thomas de Grivel, France Local Chairs ~~~~~~~~~~~~ Wojciech Gac, Keepit, Poland Michał Herda, Keepit, Poland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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Question about ASDF test failure on ABCL
by Robert Goldman 23 Mar '26

23 Mar '26

The ASDF test test-run-program-unix.script on ABCL 1.9.3 failed on linux (the test platform). The docker image used is ` clfoundation/abcl:1.9.3-noble-jdk-21`. Here is the error message: ``` The following error was encountered: Java exception 'java.lang.reflect.InaccessibleObjectException: Unable to make field private final int java.lang.ProcessImpl.pid accessible: module java.base does not "opens java.lang" to unnamed module @6d59a85b'. ``` The job log is here: https://gitlab.common-lisp.net/asdf/asdf/-/jobs/113958 I believe this is the test in question: ``` (define-test "basic functionality" (with-expected-failure (#+abcl (or (and (eq (uiop:operating-system) :linux) (uiop:version= (lisp-implementation-version) "1.8.0")) (not (eq (uiop:operating-system) :linux)))) (let* ((process-info (launch-program "./sleeper.sh 12 1")) (pid (process-info-pid process-info))) (handle-result "obtainable and plausible?" (and (numberp pid) (plusp pid))) (wait-process process-info)))) ``` The test file for this test is here: https://gitlab.common-lisp.net/asdf/asdf/-/blob/fix-gitlab-ci/test/test-run… Fixes welcomed!

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[CfP] ELS 2026 (deadline extension) -- 19th European Lisp Symposium
by Didier Verna 11 Mar '26

11 Mar '26

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19th European Lisp Symposium Call for Papers May 11-12 2026 Skład Długa, Kraków, Poland https://www.european-lisp-symposium.org/2026 Sponsored by Keepit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Important News ~~~~~~~~~~~~~~~ - First keynote announced Lambda: the Ultimate Paradigm -- François-René Rideau, Gerbil Scheme - Submission deadline extended by one week! Important Dates ~~~~~~~~~~~~~~~ - Submission deadline: Mar 22 2026 *** extended *** - Author notification: Apr 12 2026 - Final papers due: Apr 26 2026 - Early Registration: May 03 2026 - Symposium: May 11-12 2026 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Technical Program ~~~~~~~~~~~~~~~~~ We invite submissions in the following forms. Papers and experience reports must not overlap significantly with the authors’ previously published work in a peer reviewed publication, and must not be under review on another journal or conference. Also, authors must agree with our publication ethics and malpractice statement (cf. https://european-lisp-symposium.org/pepms.html) * Papers: technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. * Experience reports: papers of up to 6 pages describing a successful use of a Lisp dialect and/or analyzing obstacles that have kept it from working in practice. * Tutorials: abstracts of up to 4 pages for in-depth presentations about topics of special interest. * Demonstrations: abstracts of up to 4 pages for demonstrations of tools, libraries, and applications. For information on the submission format, please refer to the "Submission" section at https://www.european-lisp-symposium.org/2025. Submissions should be uploaded to Easy Chair at the following link: http://www.easychair.org/conferences/?conf=els20256 Note: to help us with the review process please indicate the type of submission in the title field in the submission form. Programme Chair ~~~~~~~~~~~~~~~ Mark Evenson Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Alan Ruttenberg, USA Dave Cooper, Genworks, USA Dimitris Vyzovitis, Mighty Gerbils Eitaro Fukamachi, Japan Marc Battyani, Enfabrica, USA Mark David, Genworks, USA Michael Raskin, LaBRI, France Robert Goldman, SIFT, USA Jason Hemann, Seton Hall University, USA Kristopher Micinski, Syracuse University, USA Local Chairs ~~~~~~~~~~~~ Wojciech Gac, Keepit, Poland Michał Herda, Keepit, Poland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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[CfP] ELS 2026, the 19th European Lisp Symposium
by Didier Verna 19 Jan '26

19 Jan '26

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19th European Lisp Symposium Call for Papers May 11-12 2026 Skład Długa, Kraków, Poland https://www.european-lisp-symposium.org/2026 Sponsored by Keepit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Important Dates ~~~~~~~~~~~~~~~ - Submission deadline: Mar 15 2026 - Author notification: Apr 12 2026 - Final papers due: Apr 13 2026 - Early Registration: Apr 26 2026 - Symposium: May 11-12 2026 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Technical Program ~~~~~~~~~~~~~~~~~ We invite submissions in the following forms. Papers and experience reports must not overlap significantly with the authors’ previously published work in a peer reviewed publication, and must not be under review on another journal or conference. Also, authors must agree with our publication ethics and malpractice statement (cf. https://european-lisp-symposium.org/pepms.html) * Papers: technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. * Experience reports: papers of up to 6 pages describing a successful use of a Lisp dialect and/or analyzing obstacles that have kept it from working in practice. * Tutorials: abstracts of up to 4 pages for in-depth presentations about topics of special interest. * Demonstrations: abstracts of up to 4 pages for demonstrations of tools, libraries, and applications. For information on the submission format, please refer to the "Submission" section at https://www.european-lisp-symposium.org/2025. Submissions should be uploaded to Easy Chair at the following link: http://www.easychair.org/conferences/?conf=els20256 Note: to help us with the review process please indicate the type of submission in the title field in the submission form. Programme Chair ~~~~~~~~~~~~~~~ Mark Evenson Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Alan Ruttenberg, USA Dave Cooper, Genworks, USA Dimitris Vyzovitis, Mighty Gerbils Eitaro Fukamachi, Japan Marc Battyani, Enfabrica, USA Mark David, Genworks, USA Michael Raskin, LaBRI, France Robert Goldman, SIFT, USA -- tbe Local Chairs ~~~~~~~~~~~~ Wojciech Gac, Keepit, Poland Michał Herda, Keepit, Poland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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[Final CfP] 18th European Lisp Symposium -- Extended Deadline
by Didier Verna 02 Mar '25

02 Mar '25

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18th European Lisp Symposium Last Call for Papers *** Extended Deadline *** May 19-20 2025 SGH, Zurich, Switzerland https://www.european-lisp-symposium.org/2025 Sponsered by SGH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Special Focus ~~~~~~~~~~~~~ This year, we suggest a special focus on artificial intelligence, and meta-programming beyond macros. Invited Speakers ~~~~~~~~~~~~~~~~ Joerg Gutknecht -- Project Oberon: A Late Appraisal Anurag Mendhekar -- Is Lisp Still Relevant in the New Age of AI? Robert Smith -- Toward safe, flexible, and efficient software in Common Lisp Important Dates ~~~~~~~~~~~~~~~ - Registration opens: Dec 10 2024 - Submission deadline: Mar 09 2025 ( *** extended *** ) - Author notification: Mar 30 2025 - Final papers due: Apr 13 2025 - Early Registration: May 04 2025 - Symposium: May 19-20 2025 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Technical Program ~~~~~~~~~~~~~~~~~ We invite submissions in the following forms. Papers and experience reports must not overlap significantly with the authors’ previously published work in a peer reviewed publication, and must not be under review on another journal or conference. Also, authors must agree with our publication ethics and malpractice statement (cf. https://european-lisp-symposium.org/pepms.html) * Papers: technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. * Experience reports: papers of up to 6 pages describing a successful use of a Lisp dialect and/or analyzing obstacles that have kept it from working in practice. * Tutorials: abstracts of up to 4 pages for in-depth presentations about topics of special interest. * Demonstrations: abstracts of up to 4 pages for demonstrations of tools, libraries, and applications. For information on the submission format, please refer to the "Submission" section at https://www.european-lisp-symposium.org/2025. Submissions should be uploaded to Easy Chair at the following link: http://www.easychair.org/conferences/?conf=els2025. Note: to help us with the review process please indicate the type of submission in the title field in the submission form. Programme Chair ~~~~~~~~~~~~~~~ François-René Rideau Đặng-Vũ Bân, MuKn, USA Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Conrad Barski, USA Marc Battyani, Enfabrica, USA Dave Cooper, Genworks, USA Ryan Culpepper, University of Massachusetts Boston, USA Eitaro Fukamachi, Japan Robert Goldman, SIFT, USA Gavin Gray, Brown University, USA Jason Hemann, Seton Hall University, USA Kristopher Micinski, Syracuse University, USA Marco Morazan, Seton Hall University, USA Michael Raskin, LaBRI, France Masatoshi Sano, Nayuta, Japan Dimitris Vyzovitis, Mighty Gerbils Local Chair ~~~~~~~~~~~ Yukari Hafner, Shirakumo.org, Switzerland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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bug: compiled function behaves differently than interpreted
by samuel.edwin.ward＠gmail.com 13 Dec '24

13 Dec '24

I initially discovered this in 1.9.2 with slime and all that, but I reproduced this on a build of d0a525323b640223bacfb17cde59db995f43cce9 from GitHub with ./abcl --noinit. I don't have a completely minimized case, but it's pretty small. uname -a: Darwin sew-MBA.local 24.1.0 Darwin Kernel Version 24.1.0: Thu Oct 10 21:05:14 PDT 2024; root:xnu-11215.41.3~2/RELEASE_ARM64_T8103 arm64 Reproduction: Armed Bear Common Lisp 1.9.3-dev Java 23.0.1 Homebrew OpenJDK 64-Bit Server VM Low-level initialization completed in 0.158 seconds. Startup completed in 0.698 seconds. Type ":help" for a list of available commands. CL-USER(1): (setq class (jcall "arrayType" (jstatic "forPrimitiveName" "java.lang.Class" "float"))) #<java.lang.Class class [F {6290834B}> CL-USER(2): (defun represent (class) (cond ((jcall "isPrimitive" class) (intern (string-upcase (jcall "getName" class)) "KEYWORD")) ((jcall "isArray" class) (list :array (represent (jcall "componentType" class)))) (t (jcall "getName" class)))) REPRESENT CL-USER(3): (represent class) (:ARRAY :FLOAT) CL-USER(4): (compile 'represent) REPRESENT NIL NIL CL-USER(5): (represent class) :FLOAT :EXTERNAL CL-USER(6): I think the interpreted result is correct, but either way it seems like a bug that they're different. My story gets stranger. I tried to reproduce it with DRIBBLE (for this email) and I couldn't: COMMON-LISP-USER> (setq class (jcall "arrayType" (jstatic "forPrimitiveName" "java.lang.Class" "float"))) #<java.lang.Class class [F {194B1E17}> COMMON-LISP-USER> (defun represent (class) (cond ((jcall "isPrimitive" class) (intern (string-upcase (jcall "getName" class)) "KEYWORD")) ((jcall "isArray" class) (list :array (represent (jcall "componentType" class)))) (t (jcall "getName" class)))) REPRESENT COMMON-LISP-USER> (represent class) (:ARRAY :FLOAT) COMMON-LISP-USER> (compile 'represent) REPRESENT COMMON-LISP-USER> (represent class) (:ARRAY :FLOAT) COMMON-LISP-USER> (dribble) If it's any help, I tried re-implementing the function a number of ways, and this was the first one I found that didn't exhibit the problem: (defun represent (class) (if (jcall "isArray" class) (let*((component (jcall "componentType" class)) (mangled (represent component))) (list :array mangled)) (let ((classname (jcall "getName" class))) (if (jcall "isPrimitive" class) (alexandria:make-keyword (string-upcase classname)) (jcall "getName" class))))) Thanks all!

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[CfP] ELS'25, 18th European Lisp Symposium, May 19-20, Zurich
by Didier Verna 10 Dec '24

10 Dec '24

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18th European Lisp Symposium Call for Papers May 19-20 2025 SGH, Zurich, Switzerland https://www.european-lisp-symposium.org/2025 Sponsered by SGH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Special Focus ~~~~~~~~~~~~~ This year, we suggest a special focus on artifical intelligence, and meta-programming beyond macros. Invited Speakers ~~~~~~~~~~~~~~~~ Anurag Mendhekar Joerg Gutknecht Important Dates ~~~~~~~~~~~~~~~ - Registration opens: Dec 10 2024 - Submission deadline: Mar 02 2025 - Author notification: Mar 30 2025 - Final papers due: Apr 13 2025 - Early Registration: May 04 2025 - Symposium: May 19-20 2025 Scope ~~~~~ The European Lisp Symposium is a premier forum for the discussion and dissemination of all aspects of design, implementation, and application of any of the Lisp dialects, including Common Lisp, Scheme, Emacs Lisp, Clojure, Racket, ACL2, AutoLisp, ISLISP, Dylan, SKILL, Hy, Shen, Carp, Janet, uLisp, Picolisp, Gamelisp, TXR, and so on. We encourage everyone interested in Lisp to participate. The European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications, and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - context-, aspect-, domain-oriented and generative programming - macro-, reflective-, meta- and/or rule-based development approaches - language design and implementation - language integration, inter-operation, and deployment - development methodologies, support, and environments - educational approaches and perspectives - experience reports and case studies Technical Program ~~~~~~~~~~~~~~~~~ We invite submissions in the following forms. Papers and experience reports must not overlap significantly with the authors’ previously published work in a peer reviewed publication, and must not be under review on another journal or conference. Also, authors must agree with our publication ethics and malpractice statement (cf. https://european-lisp-symposium.org/pepms.html) * Papers: technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. * Experience reports: papers of up to 6 pages describing a successful use of a Lisp dialect and/or analyzing obstacles that have kept it from working in practice. * Tutorials: abstracts of up to 4 pages for in-depth presentations about topics of special interest. * Demonstrations: abstracts of up to 4 pages for demonstrations of tools, libraries, and applications. For information on the submission format, please refer to the "Submission" section at https://www.european-lisp-symposium.org/2025. Submissions should be uploaded to Easy Chair at the following link: http://www.easychair.org/conferences/?conf=els2025. Note: to help us with the review process please indicate the type of submission in the title field in the submission form. Programme Chair ~~~~~~~~~~~~~~~ François-René Rideau Đặng-Vũ Bân, MuKn, USA Organizing Chair ~~~~~~~~~~~~~~~~ Didier Verna, EPITA / LRE, France Programme Committee ~~~~~~~~~~~~~~~~~~~ Conrad Barski, USA Marc Battyani, Enfabrica, USA Dave Cooper, Genworks, USA Ryan Culpepper, University of Massachusetts Boston, USA Eitaro Fukamachi, Japan Robert Goldman, SIFT, USA Gavin Gray, Brown University, USA Jason Hemann, Seton Hall University, USA Kristopher Micinski, Syracuse University, USA Marco Morazan, Seton Hall University, USA Michael Raskin, LaBRI, France Masatoshi Sano, Nayuta, Japan Dimitris Vyzovitis, Mighty Gerbils Local Chair ~~~~~~~~~~~ Yukari Hafner, Shirakumo.org, Switzerland Virtualization Team ~~~~~~~~~~~~~~~~~~~ Georgiy Tugai, Configura, Sweden Yukari Hafner, Shirakumo.org, Switzerland -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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Problem linking ABCL code into a larger Java program
by Robert Goldman 14 Nov '24

14 Nov '24

I've been trying to resuscitate some old code that used some functions I wrote in ABCL into a larger Java system (if anyone cares, the PRISM probabilistic model checker). I'm getting the following error message: ``` ; Compiling jar:file:///Users/rpg/projects/matrics/prism/prism/lib/abcl-contrib.jar!/asdf-jar/package.lisp ... ; (DEFPACKAGE #:ASDF-JAR ...) ; Wrote /Users/rpg/.cache/common-lisp/abcl-1.9.2-fasl43-macosx-arm64/Users/rpg/projects/matrics/prism/prism/lib/abcl-contrib.jar/asdf-jar/package-tmp1FUW82KK.abcl (0.022 seconds) ; Compiling jar:file:///Users/rpg/projects/matrics/prism/prism/lib/abcl-contrib.jar!/asdf-jar/asdf-jar.lisp ... ; (IN-PACKAGE #:ASDF-JAR) ; (DEFUN ADD-SYSTEM-FILES-TO-MAPPING! ...) ; (DEFUN SYSTEMS->HASH-TABLE ...) ; (DEFUN PACKAGE ...) ; (DEFUN ALL-FILES ...) ; (DEFUN RESOLVE-SYSTEM-OR-FEATURE ...) ; (DEFUN DEPENDENT-SYSTEMS ...) ; (DEFUN ARCHIVE-RELATIVE-PATH ...) ; (DEFUN TMPDIR ...) ; (DEFUN ADD-TO-ASDF ...) ; (DEFUN PREPARE-FOR-WAR ...) ; Wrote /Users/rpg/.cache/common-lisp/abcl-1.9.2-fasl43-macosx-arm64/Users/rpg/projects/matrics/prism/prism/lib/abcl-contrib.jar/asdf-jar/asdf-jar-tmpLI46SF5K.abcl (0.206 seconds) #<THREAD "main" native {753AACF}>: Debugger invoked on condition of type TYPE-ERROR The value #<jdk.internal.loader.ClassLoaders$AppClassLoader jdk.internal.loader.ClassLoaders.... {6470078D}> is not of type LIST. [1] CL-USER(1): Exception trying to start ABCL PRISM! ``` backtrace: [gist here](https://gist.github.com/rpgoldman/c50f2d371386d13d4a98e2fe84a86be5") This is Java 23, and I suspect I should be trying an earlier version, but I'm not sure what one. I'm really barely literate in Java, which is why I wrote the code in question in ABCL instead of Java, so I apologize if this question is just plain stupid. Thanks for any clues

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ABCL in a multi-threading environment
by Blake McBride 19 Sep '24

19 Sep '24

Hello, I have a multi-threading Java application (like a web server). ABCL is already added to it but is not used too much. I have a particular need within that application that I think ABCL would be well suited for, but I first need to better understand how ABCL functions in a multithreading environment. What I need is as follows. I have some Lisp code and data that will be defined both by .lisp files and from within Java. This code and data will be used by a multi-threading Java application in a read-only way. However, the Java threads themselves need to be able to introduce Lisp data that must be unique to each thread and gets deleted when the thread ends (presumably by the GC). Is there a way to do this with ABCL? Thank you! Blake McBride

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