Debian Bug report logs - #532757
erlang-base: Contains debug information which makes the package huge

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Martin Pitt <martin.pitt@ubuntu.com>

To: Debian BTS Submit <submit@bugs.debian.org>

Cc: James Henstridge <james@jamesh.id.au>

Subject: erlang-base: Contains debug information which makes the package huge

Date: Thu, 11 Jun 2009 13:14:21 +0200

[Message part 1 (text/plain, inline)]

Package: erlang
Version: 1:13.b-dfsg1-1

Hello,

The erlang-base package is about 7 MB, which is very large for a
runtime environment. This is an issue for using e. g. couchdb in an
embedded environment, or shipping couchdb/erlang runtime on
distribution CDs (which have limited space).

In https://launchpad.net/bugs/385093 we are currently discussing to
move the debug information out of erlang-base into a separate package
(this could just go into erlang-dev, or into a new erlang-debug).

We would like to modify the package so that erlang-base gets stripped
libraries (with e. g. erts/emulator/utils/make_preload beam_strip())
and that erlang-debug would ship the unstripped libraries in an
alternate preferred library search path.

However, we don't want to do this without your consent/acceptance of
the patch, since that would introduce a large incompatibility of
reverse dependencies between Debian and Ubuntu.

What do you think about the idea?

Thanks for considering,

Martin

P.S. We are also discussing other steps to put -base on a diet:
 - https://launchpad.net/bugs/385120 : drop uniprocessor BEAM
 - https://launchpad.net/bugs/385095 : separating compiler
We'll file separate bug reports after we discussed this one, and after
we made some further investigations.

-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)

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Message #12 received at 532757@bugs.debian.org (full text, mbox, reply):

From: Sergei Golovan <sgolovan@gmail.com>

To: Martin Pitt <martin.pitt@ubuntu.com>, 532757@bugs.debian.org

Cc: control@bugs.debian.org

Subject: Re: Bug#532757: erlang-base: Contains debug information which makes the package huge

Date: Thu, 11 Jun 2009 15:55:53 +0400

severity 532757 wishlist
thanks

On Thu, Jun 11, 2009 at 3:14 PM, Martin Pitt<martin.pitt@ubuntu.com> wrote:
>
> Hello,
>
> The erlang-base package is about 7 MB, which is very large for a
> runtime environment. This is an issue for using e. g. couchdb in an
> embedded environment, or shipping couchdb/erlang runtime on
> distribution CDs (which have limited space).

1) I wouldn't like to split erlang-base more (except probably
separating compiler and hipe, but this requires additional
investigations because stdlib has references to compiler and escript
with -mode(compile) directive will not work without compiler too, so
I'd like to be sure that these drawbacks are minor and there aren't
other problems).

2) As for debug information, it's better to ask upstream first why they include
debug info and don't give a way to strip it (except patching the
source). I'm afraid that since everyone uses unstripped beam files
then stripping them will reveal some unusual bugs. And I wouldn't like
Debian users to be guinea pigs.

>
> In https://launchpad.net/bugs/385093 we are currently discussing to
> move the debug information out of erlang-base into a separate package
> (this could just go into erlang-dev, or into a new erlang-debug).
>
> We would like to modify the package so that erlang-base gets stripped
> libraries (with e. g. erts/emulator/utils/make_preload beam_strip())
> and that erlang-debug would ship the unstripped libraries in an
> alternate preferred library search path.
>
> However, we don't want to do this without your consent/acceptance of
> the patch, since that would introduce a large incompatibility of
> reverse dependencies between Debian and Ubuntu.

3) Currently, Erlang in Ubuntu is essentially unmaintained, so keeping
compatibility with Debian packages is reasonable. But if you will
maintain it (and fix Ubuntu-specific bugs) then I don't see why
compatibility is necessary.

-- 
Sergei Golovan

Message #19 received at 532757@bugs.debian.org (full text, mbox, reply):

From: James Henstridge <james@jamesh.id.au>

To: Sergei Golovan <sgolovan@gmail.com>

Cc: Martin Pitt <martin.pitt@ubuntu.com>, 532757@bugs.debian.org

Subject: Re: Bug#532757: erlang-base: Contains debug information which makes the package huge

Date: Fri, 12 Jun 2009 14:11:48 +0800

On Thu, Jun 11, 2009 at 7:55 PM, Sergei Golovan <sgolovan@gmail.com> wrote:
> severity 532757 wishlist
> thanks
>
> On Thu, Jun 11, 2009 at 3:14 PM, Martin Pitt<martin.pitt@ubuntu.com> wrote:
>>
>> Hello,
>>
>> The erlang-base package is about 7 MB, which is very large for a
>> runtime environment. This is an issue for using e. g. couchdb in an
>> embedded environment, or shipping couchdb/erlang runtime on
>> distribution CDs (which have limited space).
>
> 1) I wouldn't like to split erlang-base more (except probably
> separating compiler and hipe, but this requires additional
> investigations because stdlib has references to compiler and escript
> with -mode(compile) directive will not work without compiler too, so
> I'd like to be sure that these drawbacks are minor and there aren't
> other problems).

I hadn't thought about the interactive shell you get when running
"erl" with no arguments.  Perhaps that is a reason to not split out
the compiler.


> 2) As for debug information, it's better to ask upstream first why they include
> debug info and don't give a way to strip it (except patching the
> source). I'm afraid that since everyone uses unstripped beam files
> then stripping them will reveal some unusual bugs. And I wouldn't like
> Debian users to be guinea pigs.

As far as running existing applications, I don't think there is much
risk: stripped "production" builds are one of the options provided on
the CEAN site (http://cean.process-one.net/downloads/) and I've seen
it suggested multiple times in the erlang mailing list archives.

The existing rules for determining the flags appear to be "build with
debug info on all systems except vxworks and ose_ppc750".  My guess is
that this corresponds to Ericsson wanting debug info on the systems
they develop on but smaller binaries on systems they deploy to.

I haven't noticed any problems running applications without debug_info
if it helps.


>> In https://launchpad.net/bugs/385093 we are currently discussing to
>> move the debug information out of erlang-base into a separate package
>> (this could just go into erlang-dev, or into a new erlang-debug).
>>
>> We would like to modify the package so that erlang-base gets stripped
>> libraries (with e. g. erts/emulator/utils/make_preload beam_strip())
>> and that erlang-debug would ship the unstripped libraries in an
>> alternate preferred library search path.
>>
>> However, we don't want to do this without your consent/acceptance of
>> the patch, since that would introduce a large incompatibility of
>> reverse dependencies between Debian and Ubuntu.
>
> 3) Currently, Erlang in Ubuntu is essentially unmaintained, so keeping
> compatibility with Debian packages is reasonable. But if you will
> maintain it (and fix Ubuntu-specific bugs) then I don't see why
> compatibility is necessary.

Compatibility makes it easier to pass changes back and forth between
the two distributions.  I doubt our user bases are that different
(some want to develop Erlang apps, some want to run Erlang apps), so
it seems worthwhile trying to cooperate.

Our main goal here is to get the basic runtime down small enough so
that we can get an Erlang based application (CouchDB) onto the Ubuntu
install CD.  I imagine that these improvements could also be useful
for Debian users wanting to deploy systems with limited storage space.

James.

Message #24 received at 532757-close@bugs.debian.org (full text, mbox, reply):

From: Sergei Golovan <sgolovan@debian.org>

To: 532757-close@bugs.debian.org

Subject: Bug#532757: fixed in erlang 1:13.b.1-dfsg-2

Date: Wed, 17 Jun 2009 06:17:38 +0000

Source: erlang
Source-Version: 1:13.b.1-dfsg-2

We believe that the bug you reported is fixed in the latest version of
erlang, which is due to be installed in the Debian FTP archive:

erlang-appmon_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-appmon_13.b.1-dfsg-2_i386.deb
erlang-asn1_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-asn1_13.b.1-dfsg-2_i386.deb
erlang-base-hipe_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-base-hipe_13.b.1-dfsg-2_i386.deb
erlang-base_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-base_13.b.1-dfsg-2_i386.deb
erlang-common-test_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-common-test_13.b.1-dfsg-2_i386.deb
erlang-corba_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-corba_13.b.1-dfsg-2_i386.deb
erlang-crypto_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-crypto_13.b.1-dfsg-2_i386.deb
erlang-debugger_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-debugger_13.b.1-dfsg-2_i386.deb
erlang-dev_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-dev_13.b.1-dfsg-2_i386.deb
erlang-dialyzer_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-dialyzer_13.b.1-dfsg-2_i386.deb
erlang-docbuilder_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-docbuilder_13.b.1-dfsg-2_i386.deb
erlang-edoc_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-edoc_13.b.1-dfsg-2_i386.deb
erlang-et_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-et_13.b.1-dfsg-2_i386.deb
erlang-eunit_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-eunit_13.b.1-dfsg-2_i386.deb
erlang-examples_13.b.1-dfsg-2_all.deb
  to pool/main/e/erlang/erlang-examples_13.b.1-dfsg-2_all.deb
erlang-gs_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-gs_13.b.1-dfsg-2_i386.deb
erlang-ic_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-ic_13.b.1-dfsg-2_i386.deb
erlang-inets_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-inets_13.b.1-dfsg-2_i386.deb
erlang-inviso_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-inviso_13.b.1-dfsg-2_i386.deb
erlang-megaco_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-megaco_13.b.1-dfsg-2_i386.deb
erlang-mnesia_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-mnesia_13.b.1-dfsg-2_i386.deb
erlang-mode_13.b.1-dfsg-2_all.deb
  to pool/main/e/erlang/erlang-mode_13.b.1-dfsg-2_all.deb
erlang-nox_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-nox_13.b.1-dfsg-2_i386.deb
erlang-observer_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-observer_13.b.1-dfsg-2_i386.deb
erlang-odbc_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-odbc_13.b.1-dfsg-2_i386.deb
erlang-os-mon_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-os-mon_13.b.1-dfsg-2_i386.deb
erlang-parsetools_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-parsetools_13.b.1-dfsg-2_i386.deb
erlang-percept_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-percept_13.b.1-dfsg-2_i386.deb
erlang-pman_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-pman_13.b.1-dfsg-2_i386.deb
erlang-public-key_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-public-key_13.b.1-dfsg-2_i386.deb
erlang-reltool_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-reltool_13.b.1-dfsg-2_i386.deb
erlang-runtime-tools_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-runtime-tools_13.b.1-dfsg-2_i386.deb
erlang-snmp_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-snmp_13.b.1-dfsg-2_i386.deb
erlang-src_13.b.1-dfsg-2_all.deb
  to pool/main/e/erlang/erlang-src_13.b.1-dfsg-2_all.deb
erlang-ssh_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-ssh_13.b.1-dfsg-2_i386.deb
erlang-ssl_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-ssl_13.b.1-dfsg-2_i386.deb
erlang-syntax-tools_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-syntax-tools_13.b.1-dfsg-2_i386.deb
erlang-test-server_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-test-server_13.b.1-dfsg-2_i386.deb
erlang-toolbar_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-toolbar_13.b.1-dfsg-2_i386.deb
erlang-tools_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-tools_13.b.1-dfsg-2_i386.deb
erlang-tv_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-tv_13.b.1-dfsg-2_i386.deb
erlang-typer_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-typer_13.b.1-dfsg-2_i386.deb
erlang-webtool_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-webtool_13.b.1-dfsg-2_i386.deb
erlang-wx_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-wx_13.b.1-dfsg-2_i386.deb
erlang-x11_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-x11_13.b.1-dfsg-2_i386.deb
erlang-xmerl_13.b.1-dfsg-2_i386.deb
  to pool/main/e/erlang/erlang-xmerl_13.b.1-dfsg-2_i386.deb
erlang_13.b.1-dfsg-2.diff.gz
  to pool/main/e/erlang/erlang_13.b.1-dfsg-2.diff.gz
erlang_13.b.1-dfsg-2.dsc
  to pool/main/e/erlang/erlang_13.b.1-dfsg-2.dsc
erlang_13.b.1-dfsg-2_all.deb
  to pool/main/e/erlang/erlang_13.b.1-dfsg-2_all.deb



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 532757@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Sergei Golovan <sgolovan@debian.org> (supplier of updated erlang package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Wed, 17 Jun 2009 08:49:38 +0400
Source: erlang
Binary: erlang-base erlang-base-hipe erlang-appmon erlang-asn1 erlang-common-test erlang-corba erlang-crypto erlang-debugger erlang-dialyzer erlang-docbuilder erlang-edoc erlang-et erlang-eunit erlang-gs erlang-ic erlang-inets erlang-inviso erlang-megaco erlang-mnesia erlang-observer erlang-odbc erlang-os-mon erlang-parsetools erlang-percept erlang-pman erlang-public-key erlang-reltool erlang-runtime-tools erlang-snmp erlang-ssh erlang-ssl erlang-syntax-tools erlang-test-server erlang-toolbar erlang-tools erlang-tv erlang-typer erlang-webtool erlang-wx erlang-xmerl erlang-dev erlang-src erlang-examples erlang-mode erlang-nox erlang-x11 erlang
Architecture: source all i386
Version: 1:13.b.1-dfsg-2
Distribution: unstable
Urgency: low
Maintainer: Erlang Packagers <erlang-pkg-devel@lists.berlios.de>
Changed-By: Sergei Golovan <sgolovan@debian.org>
Description: 
 erlang     - Concurrent, real-time, distributed functional language
 erlang-appmon - Erlang/OTP application monitor
 erlang-asn1 - Erlang/OTP modules for ASN.1 support
 erlang-base - Erlang/OTP virtual machine and base applications
 erlang-base-hipe - Erlang/OTP HiPE enabled virtual machine and base applications
 erlang-common-test - Erlang/OTP application for automated testing
 erlang-corba - Erlang/OTP applications for CORBA support
 erlang-crypto - Erlang/OTP cryprographic modules
 erlang-debugger - Erlang/OTP application for debugging and testing
 erlang-dev - Erlang/OTP development libraries and headers
 erlang-dialyzer - Erlang/OTP discrepancy analyzer application
 erlang-docbuilder - Erlang/OTP application for building HTML documentation
 erlang-edoc - Erlang/OTP module for generating documentation
 erlang-et  - Erlang/OTP event tracer application
 erlang-eunit - Erlang/OTP module for unit testing
 erlang-examples - Erlang/OTP application examples
 erlang-gs  - Erlang/OTP graphics system
 erlang-ic  - Erlang/OTP IDL compiler
 erlang-inets - Erlang/OTP Internet clients and servers
 erlang-inviso - Erlang/OTP trace tool
 erlang-megaco - Erlang/OTP implementation of Megaco/H.248 protocol
 erlang-mnesia - Erlang/OTP distributed relational/object hybrid database
 erlang-mode - Erlang major editing mode for Emacs
 erlang-nox - Erlang/OTP applications that don't require X Window System
 erlang-observer - Erlang/OTP application for investigating distributed systems
 erlang-odbc - Erlang/OTP interface to SQL databases
 erlang-os-mon - Erlang/OTP operating system monitor
 erlang-parsetools - Erlang/OTP parsing tools
 erlang-percept - Erlang/OTP concurrency profiling tool
 erlang-pman - Erlang/OTP process manager
 erlang-public-key - Erlang/OTP public key infrastructure
 erlang-reltool - Erlang/OTP release management tool
 erlang-runtime-tools - Erlang/OTP runtime tracing/debugging tools
 erlang-snmp - Erlang/OTP SNMP applications
 erlang-src - Erlang/OTP applications sources
 erlang-ssh - Erlang/OTP implementation of SSH protocol
 erlang-ssl - Erlang/OTP implementation of SSL
 erlang-syntax-tools - Erlang/OTP modules for handling abstract Erlang syntax trees
 erlang-test-server - Erlang/OTP server for automated application testing
 erlang-toolbar - Erlang/OTP graphical toolbar
 erlang-tools - Erlang/OTP various tools
 erlang-tv  - Erlang/OTP table viewer
 erlang-typer - Erlang/OTP code type annotator
 erlang-webtool - Erlang/OTP helper for web-based tools
 erlang-wx  - Erlang/OTP bindings to wxWidgets
 erlang-x11 - Erlang/OTP applications that require X Window System
 erlang-xmerl - Erlang/OTP XML tools
Closes: 532757
Changes: 
 erlang (1:13.b.1-dfsg-2) unstable; urgency=low
 .
   * Updated manpages for section 1.
   * Applied patch by James Henstridge, which sets ERL_COMPILE_FLAGS based on
     DEB_BUILD_OPTIONS. By default slim runtime without debug info is built.
     To remove slim option set DEB_BUILD_OPTION to 'nostrip', to add debug_info
     compiler option set DEB_BUILD_OPTION to 'debug'. Or it may be set to
     'nostrip,debug' to return to the previous level ob debug information
     (closes: #532757).
   * Added a few words about building Erlang packages with debug info included
     to README.Debian.
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 b79b049444c46f6c458a66040a1a38612d1623eb 116694 erlang-edoc_13.b.1-dfsg-2_i386.deb
 5a43e222e271e7425994f4a5e4ec82bdb59ccb4f 66082 erlang-et_13.b.1-dfsg-2_i386.deb
 e9e6ff509db0726e45e98f105cf53ada368ab07f 84816 erlang-eunit_13.b.1-dfsg-2_i386.deb
 1d40ed70278dca4138745905298dbe0f32baaa41 352560 erlang-gs_13.b.1-dfsg-2_i386.deb
 49e3c4964ca60c4af10a7e93a931b9d76ba93746 286540 erlang-ic_13.b.1-dfsg-2_i386.deb
 477a97a018ddb8f7f1aae8efaa1b65a22e66810a 281712 erlang-inets_13.b.1-dfsg-2_i386.deb
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 3f116bb684c1b236ca8910b58e4a5f47ff34f66b 2326286 erlang-megaco_13.b.1-dfsg-2_i386.deb
 1ee3eacdba8b3139c67f04f2ea09f42a03798aa3 258822 erlang-mnesia_13.b.1-dfsg-2_i386.deb
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Message #29 received at 532757@bugs.debian.org (full text, mbox, reply):

From: Michael Pitidis <el01707@mail.ntua.gr>

To: Debian Bug Tracking System <532757@bugs.debian.org>

Subject: Stripped debug info breaks erlang-dialyzer

Date: Thu, 13 Aug 2009 13:10:07 +0300

Package: erlang
Version: 1:13.b.1-dfsg-5
Severity: normal


Hello,

Distributing erlang with stripped debug info breaks dialyzer (and probably any
application which extracts abstract code from beam files). Dialyzer requires a
persistent lookup table (plt), containing analysis information from any
dependencies. Any non-trivial erlang program uses several library functions
from erlang-base, therefore it's a very common scenario to build a plt from
some of these libraries.

Example output follows:


$ dialyzer
  Checking whether the PLT /home/mike/.dialyzer_plt is up-to-date...
dialyzer: Could not find the PLT: /home/mike/.dialyzer_plt
Use the options:
   --build_plt   to build a new one; or
   --add_to_plt  to add to an existing PLT
For example (in an installed Erlang/OTP system):
   dialyzer --build_plt -r $ERL_TOP/lib/erts-5.7/ebin\
                           $ERL_TOP/lib/kernel/ebin\
                           $ERL_TOP/lib/stdlib/ebin\
                           $ERL_TOP/lib/mnesia/ebin\
                           $ERL_TOP/lib/crypto/ebin
Note that building a PLT such as the above may take 20 mins or so

$ dialyzer --build_plt -r /usr/lib/erlang/lib/{compiler-*,kernel-*,dialyzer-*,erts-*,stdlib-*}/ebin

dialyzer: Could not get abstract code for file:
/usr/lib/erlang/lib/compiler-4.6.2/ebin/beam_asm.beam (please recompile it with +debug_info)

$ dialyzer --src --build_plt -r /usr/lib/erlang/lib/{compiler-*,kernel-*,dialyzer-*,erts-*,stdlib-*}/src 

dialyzer: {dialyzer_error,"Byte code compiled with debug_info is needed to build the PLT"}
[{dialyzer_options,check_output_plt,1},
 {dialyzer_options,postprocess_opts,1},
 {dialyzer_options,build,1},
 {dialyzer_cl_parse,cl,1},
 {dialyzer_cl_parse,start,0},
 {dialyzer,plain_cl,0},
 {init,start_it,1},
 {init,start_em,1}]


Dialyzer users are forced to rebuild erlang as per the README.Debian file.
Providing separate -dbg packages or something similar would prove more
convenient, unless there's a workaround I'm unaware of.


-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages erlang depends on:
ii  erlang-appmon            1:13.b.1-dfsg-5 Erlang/OTP application monitor
ii  erlang-asn1              1:13.b.1-dfsg-5 Erlang/OTP modules for ASN.1 suppo
ii  erlang-base-hipe         1:13.b.1-dfsg-5 Erlang/OTP HiPE enabled virtual ma
ii  erlang-common-test       1:13.b.1-dfsg-5 Erlang/OTP application for automat
ii  erlang-corba             1:13.b.1-dfsg-5 Erlang/OTP applications for CORBA 
ii  erlang-crypto            1:13.b.1-dfsg-5 Erlang/OTP cryprographic modules
ii  erlang-debugger          1:13.b.1-dfsg-5 Erlang/OTP application for debuggi
ii  erlang-dev               1:13.b.1-dfsg-5 Erlang/OTP development libraries a
ii  erlang-dialyzer          1:13.b.1-dfsg-5 Erlang/OTP discrepancy analyzer ap
ii  erlang-docbuilder        1:13.b.1-dfsg-5 Erlang/OTP application for buildin
ii  erlang-edoc              1:13.b.1-dfsg-5 Erlang/OTP module for generating d
ii  erlang-et                1:13.b.1-dfsg-5 Erlang/OTP event tracer applicatio
ii  erlang-eunit             1:13.b.1-dfsg-5 Erlang/OTP module for unit testing
ii  erlang-gs                1:13.b.1-dfsg-5 Erlang/OTP graphics system
ii  erlang-ic                1:13.b.1-dfsg-5 Erlang/OTP IDL compiler
ii  erlang-inets             1:13.b.1-dfsg-5 Erlang/OTP Internet clients and se
ii  erlang-inviso            1:13.b.1-dfsg-5 Erlang/OTP trace tool
ii  erlang-megaco            1:13.b.1-dfsg-5 Erlang/OTP implementation of Megac
ii  erlang-mnesia            1:13.b.1-dfsg-5 Erlang/OTP distributed relational/
ii  erlang-observer          1:13.b.1-dfsg-5 Erlang/OTP application for investi
ii  erlang-odbc              1:13.b.1-dfsg-5 Erlang/OTP interface to SQL databa
ii  erlang-os-mon            1:13.b.1-dfsg-5 Erlang/OTP operating system monito
ii  erlang-parsetools        1:13.b.1-dfsg-5 Erlang/OTP parsing tools
ii  erlang-percept           1:13.b.1-dfsg-5 Erlang/OTP concurrency profiling t
ii  erlang-pman              1:13.b.1-dfsg-5 Erlang/OTP process manager
ii  erlang-public-key        1:13.b.1-dfsg-5 Erlang/OTP public key infrastructu
ii  erlang-reltool           1:13.b.1-dfsg-5 Erlang/OTP release management tool
ii  erlang-runtime-tools     1:13.b.1-dfsg-5 Erlang/OTP runtime tracing/debuggi
ii  erlang-snmp              1:13.b.1-dfsg-5 Erlang/OTP SNMP applications
ii  erlang-ssh               1:13.b.1-dfsg-5 Erlang/OTP implementation of SSH p
ii  erlang-ssl               1:13.b.1-dfsg-5 Erlang/OTP implementation of SSL
ii  erlang-syntax-tools      1:13.b.1-dfsg-5 Erlang/OTP modules for handling ab
ii  erlang-test-server       1:13.b.1-dfsg-5 Erlang/OTP server for automated ap
ii  erlang-toolbar           1:13.b.1-dfsg-5 Erlang/OTP graphical toolbar
ii  erlang-tools             1:13.b.1-dfsg-5 Erlang/OTP various tools
ii  erlang-tv                1:13.b.1-dfsg-5 Erlang/OTP table viewer
ii  erlang-typer             1:13.b.1-dfsg-5 Erlang/OTP code type annotator
ii  erlang-webtool           1:13.b.1-dfsg-5 Erlang/OTP helper for web-based to
ii  erlang-wx                1:13.b.1-dfsg-5 Erlang/OTP bindings to wxWidgets
ii  erlang-xmerl             1:13.b.1-dfsg-5 Erlang/OTP XML tools

Versions of packages erlang recommends:
ii  erlang-examples          1:13.b.1-dfsg-5 Erlang/OTP application examples
ii  erlang-mode              1:13.b.1-dfsg-5 Erlang major editing mode for Emac
ii  erlang-src               1:13.b.1-dfsg-5 Erlang/OTP applications sources

Versions of packages erlang suggests:
pn  erlang-doc-html               <none>     (no description available)
ii  erlang-manpages               1:13.b.1-1 Erlang/OTP manual pages

-- no debconf information

Message #34 received at 532757@bugs.debian.org (full text, mbox, reply):

From: Sergei Golovan <sgolovan@gmail.com>

To: Michael Pitidis <el01707@mail.ntua.gr>, 532757@bugs.debian.org

Subject: Re: Bug#532757: Stripped debug info breaks erlang-dialyzer

Date: Thu, 13 Aug 2009 22:28:22 +0400

On Thu, Aug 13, 2009 at 2:10 PM, Michael Pitidis<el01707@mail.ntua.gr> wrote:
>
> Distributing erlang with stripped debug info breaks dialyzer (and probably any
> application which extracts abstract code from beam files). Dialyzer requires a
> persistent lookup table (plt), containing analysis information from any
> dependencies. Any non-trivial erlang program uses several library functions
> from erlang-base, therefore it's a very common scenario to build a plt from
> some of these libraries.

I know that dialyzer and debugger don't work when the debug info is
stripped from beam files.

The idea of removing debug info was to reduce the size of the packages
making them more usable in embedded environment and fit small-size
media (needed for UbuntuOne project).

So, now I'm a bit unsure which way to prefer - restore debug info in
beams or leave dialyzer and debugger broken. Building set of -dbg
packages (installable simultaneously) seem to be too complicated
(technically it's possible to point erlang root to an alternative
directory, but it'd be hard to make other packages installed to
/usr/lib/erlang/lib work with that setup).

Cheers!
-- 
Sergei Golovan

Message #39 received at 532757@bugs.debian.org (full text, mbox, reply):

From: Sergei Golovan <sgolovan@nes.ru>

To: 532757@bugs.debian.org

Cc: control@bugs.debian.org

Subject: Reopening the bug

Date: Tue, 18 Aug 2009 04:13:15 +0400

reopen 532757
tags 532757 + wontfix
thanks

Hi!

The fix for this bug (removing debug info from beam files) causes more
problems than solves. So, I've reverted it in 1:13.b.1-dfsg-6 and I'm
reopening the bug.

Cheers!
-- 
Sergei Golovan

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