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* [PATCH]: Add IcedTea 6
@ 2015-01-27 15:33 Ricardo Wurmus
  2015-01-27 21:55 ` Ludovic Courtès
  0 siblings, 1 reply; 11+ messages in thread
From: Ricardo Wurmus @ 2015-01-27 15:33 UTC (permalink / raw)
  To: guix-devel

[-- Attachment #1: Type: text/plain, Size: 1897 bytes --]

Hi Guix,

attached is a patch that gives us the liberated OpenJDK in the form of
IcedTea (version 6).  IcedTea 6 is built with GCJ.  Unfortunately, it
needs Ant, which cannot be built with GCJ, so it depends on a binary
bootstrap Ant.

There are a couple of issues with this patch set that I'm aware of:

* IcedTea 6 is built without JavaScript support as this would require
  Rhino.

* I'm not happy with replacing the unpack phase and I don't like to
  refer to the OpenJDK source tarball by its full name
  "openjdk-6-src-b34-20_jan_2015.tar.xz".  Is there a way around this?

* The test suite has been disabled.  I have been able to fix most issues
  relating to the build environment (mostly hardcoded paths and
  corrupted PATH variable), but even then many tests fail.  One group of
  tests depends on a shell wrapper around Xvfb, which is currently not
  part of the xorg-server package.  A considerable number of tests fails
  upstream (see http://builder.classpath.org/icedtea/icedtea6/test/ for
  logs).

* All this patching of tests is really not pretty.  I'm not sure if
  there's a better or more concise way to achieve this.  I also don't
  know which of these steps should better be implemented as snippets.

* The patch to
  openjdk/jdk/src/share/classes/java/util/CurrencyData.properties
  really should be implemented upstream.

* the make check-* targets do not return a non-zero status code upon
  failure.  This doesn't affect us now because tests are disabled
  anyway, but using (and (zero? ...)) is just wishful thinking.

* the synopsis tells us about IcedTea (the build harness), but actually
  what we get after the build is a liberated OpenJDK.  The same problem
  affects the description, which probably should describe the purpose of
  OpenJDK instead.

I would be happy to receive comments on the above issues (or others that
you find with the patch).

~~ Ricardo


[-- Attachment #2: 0001-gnu-Add-IcedTea-6.patch --]
[-- Type: text/x-patch, Size: 20724 bytes --]

From 13490591fe7ad774e8ec95626113138d828366fb Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Date: Tue, 23 Dec 2014 12:32:25 +0100
Subject: [PATCH] gnu: Add IcedTea 6

* gnu/packages/java.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
---
 gnu-system.am         |   1 +
 gnu/packages/java.scm | 407 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 408 insertions(+)
 create mode 100644 gnu/packages/java.scm

diff --git a/gnu-system.am b/gnu-system.am
index 5fc42ba..6e6e221 100644
--- a/gnu-system.am
+++ b/gnu-system.am
@@ -147,6 +147,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/inkscape.scm			\
   gnu/packages/irssi.scm			\
   gnu/packages/iso-codes.scm			\
+  gnu/packages/java.scm				\
   gnu/packages/jrnl.scm				\
   gnu/packages/kde.scm				\
   gnu/packages/ld-wrapper.scm			\
diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
new file mode 100644
index 0000000..f0ac63e
--- /dev/null
+++ b/gnu/packages/java.scm
@@ -0,0 +1,407 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages java)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages attr)
+  #:use-module (gnu packages autotools)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages bash)
+  #:use-module (gnu packages cpio)
+  #:use-module (gnu packages cups)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages fontutils)
+  #:use-module (gnu packages gawk)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages gnuzilla) ;nss
+  #:use-module (gnu packages ghostscript) ;lcms
+  #:use-module (gnu packages gnome)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages image)
+  #:use-module (gnu packages linux) ;alsa
+  #:use-module (gnu packages wget)
+  #:use-module (gnu packages which)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages mit-krb5)
+  #:use-module (gnu packages xml)
+  #:use-module (gnu packages xorg)
+  #:use-module (gnu packages zip)
+  #:use-module (gnu packages texinfo))
+
+(define-public icedtea6
+  (package
+    (name "icedtea6")
+    (version "1.13.6")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "http://icedtea.wildebeest.org/download/source/icedtea6-"
+                    version ".tar.xz"))
+              (sha256
+               (base32
+                "16ac3f7kkln5skg202vllagkhjxrwd47h56diwzhfidhwjlz7410"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(;; There are many failing tests.
+       ;;
+       ;; * Hotspot VM tests:
+       ;;   FAILED: compiler/7082949/Test7082949.java
+       ;;   FAILED: compiler/7088020/Test7088020.java
+       ;;   FAILED: runtime/6929067/Test6929067.sh
+       ;;   FAILED: serviceability/sa/jmap-hashcode/Test8028623.java
+       ;;   => Test results: passed: 161; failed: 4
+       ;;
+       ;; * langtools tests:
+       ;;   FAILED: com/sun/javadoc/testHtmlDefinitionListTag/TestHtmlDefinitionListTag.java
+       ;;   FAILED: tools/javac/6627362/T6627362.java
+       ;;   FAILED: tools/javac/7003595/T7003595.java
+       ;;   FAILED: tools/javac/7024568/T7024568.java
+       ;;   FAILED: tools/javap/4111861/T4111861.java
+       ;;   FAILED: tools/javap/ListTest.java
+       ;;   FAILED: tools/javap/OptionTest.java
+       ;;   FAILED: tools/javap/T4884240.java
+       ;;   FAILED: tools/javap/T4975569.java
+       ;;     --> fails because of insignificant whitespace differences
+       ;;         in output of javap
+       ;;   FAILED: tools/javap/T6868539.java
+       ;;   => Test results: passed: 1,445; failed: 10
+       ;;
+       ;; * JDK tests:
+       ;;   Tests are incomplete because of a segfault after this test:
+       ;;     javax/crypto/spec/RC5ParameterSpec/RC5ParameterSpecEquals.java
+       ;;   A bug report has already been filed upstream:
+       ;;     http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=2188
+       ;;
+       ;;   The tests require xvfb-run, a wrapper script around Xvfb, which
+       ;;   has not been packaged yet.  Without it many AWT tests fail, so I
+       ;;   made no attempts to make a list of failing JDK tests.  At least
+       ;;   222 tests are failing of which at least 132 are AWT tests.
+       #:tests? #f
+       #:configure-flags
+       (let* ((gcjdir (assoc-ref %build-inputs "gcj"))
+              (ecj    (string-append gcjdir "/share/java/ecj.jar"))
+              (jdk    (string-append gcjdir "/lib/jvm/"))
+              (gcj    (string-append gcjdir "/bin/gcj")))
+         `("--enable-bootstrap"
+           "--enable-nss"
+           "--without-rhino"
+           "--disable-downloading"
+           "--disable-tests" ;they are run in the check phase instead
+           ,(string-append "--with-openjdk-src-dir=" "./openjdk")
+           ,(string-append "--with-javac=" jdk "/bin/javac")
+           ,(string-append "--with-ecj-jar=" ecj)
+           ,(string-append "--with-gcj=" gcj)
+           ,(string-append "--with-jdk-home=" jdk)
+           ,(string-append "--with-java=" jdk "/bin/java")))
+       #:phases
+       (alist-replace
+        'unpack
+        (lambda* (#:key source inputs #:allow-other-keys)
+          (let ((target (string-append ,name "-" ,version)))
+            (and (zero? (system* "tar" "xvf" source))
+                 (zero? (system* "tar" "xvjf" (assoc-ref inputs "ant-bootstrap")))
+                 (chdir target))
+            (mkdir "openjdk")
+            (with-directory-excursion "openjdk"
+              (copy-file (assoc-ref inputs "openjdk6-src")
+                         "openjdk-6-src-b34-20_jan_2015.tar.xz")
+              (system* "tar" "xvf" "openjdk-6-src-b34-20_jan_2015.tar.xz"))))
+        (alist-cons-after
+         'unpack 'patch-paths
+         (lambda _
+           (patch-shebang "../apache-ant-1.9.4/bin/ant")
+
+           (substitute* "Makefile.in"
+             ;; link against libgcj to avoid linker error
+             (("-o native-ecj")
+              "-lgcj -o native-ecj")
+             ;; do not leak information about the build host
+             (("DISTRIBUTION_ID=\"\\$\\(DIST_ID\\)\"")
+              "DISTRIBUTION_ID=\"\\\"guix\\\"\""))
+
+           ;; shebang in patches so that they apply cleanly
+           (substitute* '("patches/jtreg-jrunscript.patch"
+                          "patches/hotspot/hs23/drop_unlicensed_test.patch")
+             (("#!/bin/sh") (string-append "#!" (which "sh"))))
+
+           ;; fix path to alsa header in patch
+           (substitute* "patches/openjdk/6799141-split_out_versions.patch"
+             (("ALSA_INCLUDE=/usr/include/alsa/version.h")
+              (string-append "ALSA_INCLUDE="
+                             (assoc-ref %build-inputs "alsa-lib")
+                             "/include/alsa/version.h")))
+
+           ;; buildtree.make generates shell scripts, so we need to replace
+           ;; the generated shebang
+           (substitute* '("openjdk/hotspot/make/linux/makefiles/buildtree.make")
+             (("/bin/sh") (which "bash")))
+
+           (let ((corebin (string-append
+                           (assoc-ref %build-inputs "coreutils") "/bin/"))
+                 (binbin  (string-append
+                           (assoc-ref %build-inputs "binutils") "/bin/"))
+                 (grepbin (string-append
+                           (assoc-ref %build-inputs "grep") "/bin/")))
+             (substitute* '("openjdk/jdk/make/common/shared/Defs-linux.gmk"
+                            "openjdk/corba/make/common/shared/Defs-linux.gmk")
+               (("UNIXCOMMAND_PATH  = /bin/")
+                (string-append "UNIXCOMMAND_PATH = " corebin))
+               (("USRBIN_PATH  = /usr/bin/")
+                (string-append "USRBIN_PATH = " corebin))
+               (("DEVTOOLS_PATH *= */usr/bin/")
+                (string-append "DEVTOOLS_PATH = " corebin))
+               (("COMPILER_PATH *= */usr/bin/")
+                (string-append "COMPILER_PATH = "
+                               (assoc-ref %build-inputs "gcc") "/bin/")))
+
+             ;; fix hard-coded utility paths
+             (substitute* '("openjdk/jdk/make/common/shared/Defs-utils.gmk"
+                            "openjdk/corba/make/common/shared/Defs-utils.gmk")
+               (("ECHO *=.*echo")
+                (string-append "ECHO = " (which "echo")))
+               (("^GREP *=.*grep")
+                (string-append "GREP = " (which "grep")))
+               (("EGREP *=.*egrep")
+                (string-append "EGREP = " (which "egrep")))
+               (("CPIO *=.*cpio")
+                (string-append "CPIO = " (which "cpio")))
+               (("READELF *=.*readelf")
+                (string-append "READELF = " (which "readelf")))
+               (("^ *AR *=.*ar")
+                (string-append "AR = " (which "ar")))
+               (("^ *TAR *=.*tar")
+                (string-append "TAR = " (which "tar")))
+               (("AS *=.*as")
+                (string-append "AS = " (which "as")))
+               (("LD *=.*ld")
+                (string-append "LD = " (which "ld")))
+               (("STRIP *=.*strip")
+                (string-append "STRIP = " (which "strip")))
+               (("NM *=.*nm")
+                (string-append "NM = " (which "nm")))
+               (("^SH *=.*sh")
+                (string-append "SH = " (which "bash")))
+               (("^FIND *=.*find")
+                (string-append "FIND = " (which "find")))
+               (("LDD *=.*ldd")
+                (string-append "LDD = " (which "ldd")))
+               (("NAWK *=.*nawk")
+                (string-append "NAWK = " (which "gawk")))
+               (("NAWK *=.*gawk")
+                (string-append "NAWK = " (which "gawk")))
+               (("XARGS *=.*xargs")
+                (string-append "XARGS = " (which "xargs")))
+               (("UNZIP *=.*unzip")
+                (string-append "UNZIP = " (which "unzip")))
+               (("ZIPEXE *=.*zip")
+                (string-append "ZIPEXE = " (which "zip")))
+               (("SED *=.*sed")
+                (string-append "SED = " (which "sed"))))
+
+             ;; Some of these timestamps cause problems as they are more than
+             ;; 10 years ago, failing the build process.
+             (substitute*
+                 "openjdk/jdk/src/share/classes/java/util/CurrencyData.properties"
+               (("AZ=AZM;2005-12-31-20-00-00;AZN") "AZ=AZN")
+               (("MZ=MZM;2006-06-30-22-00-00;MZN") "MZ=MZN")
+               (("RO=ROL;2005-06-30-21-00-00;RON") "RO=RON")
+               (("TR=TRL;2004-12-31-22-00-00;TRY") "TR=TRY"))))
+          (alist-cons-before
+           'configure 'set-paths
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let* ((gcjdir  (assoc-ref %build-inputs "gcj"))
+                    (gcjlib  (string-append gcjdir "/lib"))
+                    (antpath (string-append (getcwd) "/../apache-ant-1.9.4")))
+               (setenv "CC" (which "gcc"))
+               (setenv "CPATH"
+                       (string-append (assoc-ref %build-inputs "libxrender")
+                                      "/include/X11/extensions" ":"
+                                      (assoc-ref %build-inputs "libxtst")
+                                      "/include/X11/extensions" ":"
+                                      (assoc-ref %build-inputs "libxinerama")
+                                      "/include/X11/extensions" ":"
+                                      (or (getenv "CPATH") "")))
+               (setenv "ALT_CUPS_HEADERS_PATH"
+                       (string-append (assoc-ref %build-inputs "cups")
+                                      "/include"))
+               (setenv "ALT_FREETYPE_HEADERS_PATH"
+                       (string-append (assoc-ref %build-inputs "freetype")
+                                      "/include"))
+               (setenv "ALT_FREETYPE_LIB_PATH"
+                       (string-append (assoc-ref %build-inputs "freetype")
+                                      "/lib"))
+               (setenv "LD_LIBRARY_PATH"
+                       (string-append antpath "/lib" ":" gcjlib))
+               (setenv "PATH" (string-append antpath "/bin:"
+                                             (getenv "PATH")))))
+           (alist-cons-before
+            'check 'fix-tests
+            (lambda _
+              ;; Fix PATH in test environment
+              (substitute* "src/jtreg/com/sun/javatest/regtest/Main.java"
+                (("PATH=/bin:/usr/bin")
+                 (string-append "PATH=" (getenv "PATH"))))
+              (substitute* "src/jtreg/com/sun/javatest/util/SysEnv.java"
+                (("/usr/bin/env") (which "env")))
+
+              ;; Hotspot tests
+              (with-directory-excursion "openjdk/hotspot/test/"
+                (substitute* "jprt.config"
+                  (("PATH=\"\\$\\{path4sdk\\}\"")
+                   (string-append "PATH=" (getenv "PATH")))
+                  (("make=/usr/bin/make")
+                   (string-append "make=" (which "make"))))
+                (substitute* '("runtime/6626217/Test6626217.sh"
+                               "runtime/7110720/Test7110720.sh")
+                  (("/bin/rm") (which "rm"))
+                  (("/bin/cp") (which "cp"))
+                  (("/bin/mv") (which "mv"))))
+
+              ;; JDK tests
+              (with-directory-excursion "openjdk/jdk/test/"
+                (substitute* "com/sun/jdi/JdbReadTwiceTest.sh"
+                  (("/bin/pwd") (which "pwd")))
+                (substitute* "com/sun/jdi/ShellScaffold.sh"
+                  (("/bin/kill") (which "kill")))
+                (substitute* "start-Xvfb.sh"
+                  (("/usr/bin/X11/Xvfb") (which "Xvfb"))
+                  (("/usr/bin/nohup")    (which "nohup")))
+                (substitute* "javax/security/auth/Subject/doAs/Test.sh"
+                  (("/bin/rm") (which "rm")))
+                (substitute* "tools/launcher/MultipleJRE.sh"
+                  (("echo \"#!/bin/sh\"")
+                   (string-append "echo \"#!" (which "rm") "\""))
+                  (("/usr/bin/zip") (which "zip")))
+                (substitute* "com/sun/jdi/OnThrowTest.java"
+                  (("#!/bin/sh") (string-append "#!" (which "sh"))))
+                (substitute* "java/lang/management/OperatingSystemMXBean/GetSystemLoadAverage.java"
+                  (("/usr/bin/uptime") (which "uptime")))
+                (substitute* "java/lang/ProcessBuilder/Basic.java"
+                  (("/usr/bin/env") (which "env"))
+                  (("/bin/false") (which "false"))
+                  (("/bin/true") (which "true"))
+                  (("/bin/cp") (which "cp"))
+                  (("/bin/sh") (which "sh")))
+                (substitute* "java/lang/ProcessBuilder/FeelingLucky.java"
+                  (("/bin/sh") (which "sh")))
+                (substitute* "java/lang/ProcessBuilder/Zombies.java"
+                  (("/usr/bin/perl") (which "perl"))
+                  (("/bin/ps") (which "ps"))
+                  (("/bin/true") (which "true")))
+                (substitute* "java/lang/Runtime/exec/ConcurrentRead.java"
+                  (("/usr/bin/tee") (which "tee")))
+                (substitute* "java/lang/Runtime/exec/ExecWithDir.java"
+                  (("/bin/true") (which "true")))
+                (substitute* "java/lang/Runtime/exec/ExecWithInput.java"
+                  (("/bin/cat") (which "cat")))
+                (substitute* "java/lang/Runtime/exec/ExitValue.java"
+                  (("/bin/sh") (which "sh"))
+                  (("/bin/true") (which "true"))
+                  (("/bin/kill") (which "kill")))
+                (substitute* "java/lang/Runtime/exec/LotsOfDestroys.java"
+                  (("/usr/bin/echo") (which "echo")))
+                (substitute* "java/lang/Runtime/exec/LotsOfOutput.java"
+                  (("/usr/bin/cat") (which "cat")))
+                (substitute* "java/lang/Runtime/exec/SleepyCat.java"
+                  (("/bin/cat") (which "cat"))
+                  (("/bin/sleep") (which "sleep"))
+                  (("/bin/sh") (which "sh")))
+                (substitute* "java/lang/Runtime/exec/StreamsSurviveDestroy.java"
+                  (("/bin/cat") (which "cat")))
+                (substitute* "java/rmi/activation/CommandEnvironment/SetChildEnv.java"
+                  (("/bin/chmod") (which "chmod")))
+                (substitute* "java/util/zip/ZipFile/Assortment.java"
+                  (("/bin/sh") (which "sh")))))
+            (alist-replace
+             'check
+             (lambda _
+               (and (zero? (system* "make" "check-hotspot"))
+                    (zero? (system* "make" "check-langtools"))
+                    (zero? (system* "make" "check-jdk"))))
+             (alist-replace
+              'install
+              (lambda _
+                (copy-recursively "openjdk.build" %output))
+              %standard-phases))))))))
+    (native-inputs
+     `(("ant-bootstrap"
+        ,(origin
+           (method url-fetch)
+           (uri "https://www.apache.org/dist/ant/binaries/apache-ant-1.9.4-bin.tar.bz2")
+           (sha256
+            (base32
+             "1kw801p8h5x4f0g8i5yknppssrj5a3xy1aqrkpfnk22bd1snbh90"))))
+       ("alsa-lib" ,alsa-lib)
+       ("attr" ,attr)
+       ("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("coreutils" ,coreutils)
+       ("diffutils" ,diffutils) ;for tests
+       ("gawk" ,gawk)
+       ("grep" ,grep)
+       ("libtool" ,libtool)
+       ("pkg-config" ,pkg-config)
+       ("cups" ,cups)
+       ("wget" ,wget)
+       ("which" ,which)
+       ("cpio" ,cpio)
+       ("zip" ,zip)
+       ("unzip" ,unzip)
+       ("fastjar" ,fastjar)
+       ("libxslt" ,libxslt) ;for xsltproc
+       ("mit-krb5" ,mit-krb5)
+       ("nss" ,nss)
+       ("libx11" ,libx11)
+       ("libxt" ,libxt)
+       ("libxtst" ,libxtst)
+       ("libxi" ,libxi)
+       ("libxinerama" ,libxinerama)
+       ("libxrender" ,libxrender)
+       ("libjpeg" ,libjpeg)
+       ("libpng" ,libpng)
+       ("giflib" ,giflib)
+       ("perl" ,perl)
+       ("procps" ,procps) ;for "free", even though I'm not sure we should use it
+       ("openjdk6-src"
+        ,(origin
+           (method url-fetch)
+           (uri "https://java.net/downloads/openjdk6/openjdk-6-src-b34-20_jan_2015.tar.xz")
+           (sha256
+            (base32
+             "0lafxvi255r22pjljkj9x6liacqdgin8smdmh6nzkdjjw7hv9l8k"))))
+       ("lcms" ,lcms)
+       ("zlib" ,zlib)
+       ("gtk" ,gtk+-2)
+       ("fontconfig" ,fontconfig)
+       ("freetype" ,freetype)
+       ("gcj" ,gcj-4.8)))
+    (home-page "http://icedtea.classpath.org")
+    (synopsis "A harness to build OpenJDK using Free Software build tools")
+    (description
+     "The IcedTea project provides a harness to build the source code from
+http://openjdk.java.net using Free Software build tools along with additional
+features such as a Free Software plugin and web start implementation and an
+LLVM-based JIT.")
+    ;; IcedTea is released under the GPL2 + Classpath exception, which is the
+    ;; same license as both GNU Classpath and OpenJDK.
+    (license license:gpl2+)))
-- 
1.9.3


^ permalink raw reply related	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2015-02-15 16:05 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-27 15:33 [PATCH]: Add IcedTea 6 Ricardo Wurmus
2015-01-27 21:55 ` Ludovic Courtès
2015-01-28 15:47   ` Ricardo Wurmus
2015-01-28 16:13     ` Ludovic Courtès
2015-01-29  9:47       ` Ricardo Wurmus
2015-01-29 22:44         ` Andreas Enge
2015-02-15 12:52           ` Andreas Enge
2015-02-15 13:54             ` Ricardo Wurmus
2015-02-15 14:44               ` Andreas Enge
2015-02-15 15:57                 ` Ricardo Wurmus
2015-02-15 16:05                   ` Andreas Enge

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This is a public inbox, see mirroring instructions
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as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).