GNU bug report logs - #23118
Duplicate entries in various environment variables

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Package: guix; Severity: important; Reported by: Chris Marusich <cmmarusich@HIDDEN>; dated Sat, 26 Mar 2016 04:01:02 UTC; Maintainer for guix is bug-guix@HIDDEN.
Severity set to 'important' from 'normal' Request was from ludo@HIDDEN (Ludovic Courtès) to control <at> debbugs.gnu.org. Full text available.

Message received at 23118 <at> debbugs.gnu.org:


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From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: Chris Marusich <cmmarusich@HIDDEN>
Subject: Re: bug#23118: Duplicate entries in various environment variables
References: <874mbt28k4.fsf@HIDDEN>
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 Mar 2016 20:59:39 -0700")
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Chris Marusich <cmmarusich@HIDDEN> skribis:

> This behavior should be reproducible.  I created a new user to test
> this.  When I logged into GNOME on GuixSD (built via "guix system
> reconfigure" using git commit 43a58615bfc37a053ddaca1fcf11af5c14c0b4b6)
> as the new user, I opened up the "Terminal" program (which launched bash
> as an interactive, non-login shell).  I then typed

[...]

I think the main problem is that gnome-terminal is wrapped:

--8<---------------cut here---------------start------------->8---
$ cat /gnu/store/x2hz7q806ry8lmwdya0jlff01w7djbn2-gnome-terminal-3.18.2/bin=
/gnome-terminal=20
#!/gnu/store/b1yqjimbdh5bf9jnizd4h7yf110744j2-bash-4.3.42/bin/bash
export XDG_DATA_DIRS=3D"/gnu/store/lbkdykh3aa1469li01rwyya02q50r3b9-glib-2.=
46.1/share:/gnu/store/sm1i06dhgpkhvgj2bhcn6nfi275slgjz-gsettings-desktop-sc=
hemas-3.18.0/share:/gnu/store/sqd3q1xq5fsbga00bwhghi9shi7xdaac-gtk+-3.18.2/=
share:/gnu/store/x2hz7q806ry8lmwdya0jlff01w7djbn2-gnome-terminal-3.18.2/sha=
re${XDG_DATA_DIRS:+:}$XDG_DATA_DIRS"
export GTK_PATH=3D"/gnu/store/sqd3q1xq5fsbga00bwhghi9shi7xdaac-gtk+-3.18.2/=
lib/gtk-3.0${GTK_PATH:+:}$GTK_PATH"
export GIO_EXTRA_MODULES=3D"/gnu/store/lbkdykh3aa1469li01rwyya02q50r3b9-gli=
b-2.46.1/lib/gio/modules:/gnu/store/ygn4vavcgr79p86jrlmvdycjs81ki4dl-dconf-=
0.24.0/lib/gio/modules${GIO_EXTRA_MODULES:+:}$GIO_EXTRA_MODULES"
exec -a "$0" "/gnu/store/x2hz7q806ry8lmwdya0jlff01w7djbn2-gnome-terminal-3.=
18.2/bin/.gnome-terminal-real" "$@"
--8<---------------cut here---------------end--------------->8---

This is done automatically by =E2=80=98glib-or-gtk-build-system=E2=80=99, b=
ut obviously
it=E2=80=99s not so great here.

I suppose that in practice, it would work to simply switch
gnome-terminal to =E2=80=98gnu-build-system=E2=80=99.

Could you try that?

There may still be other places that add extra entries, though.

Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#23118; Package guix. Full text available.

Message received at submit <at> debbugs.gnu.org:


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From: Chris Marusich <cmmarusich@HIDDEN>
To: bug-guix@HIDDEN
Subject: Duplicate entries in various environment variables
Date: Fri, 25 Mar 2016 20:59:39 -0700
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--=-=-=
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

Hi,

I've noticed that my environment variables contain duplicate (sometimes
more) entries.  This occurs regardless of whether the user logs in
directly via a tty or via a desktop environment like GNOME.

This behavior should be reproducible.  I created a new user to test
this.  When I logged into GNOME on GuixSD (built via "guix system
reconfigure" using git commit 43a58615bfc37a053ddaca1fcf11af5c14c0b4b6)
as the new user, I opened up the "Terminal" program (which launched bash
as an interactive, non-login shell).  I then typed

=2D-8<---------------cut here---------------start------------->8---
env > /tmp/myenv
=2D-8<---------------cut here---------------end--------------->8---

Then, I analyzed the results.  First, I defined a little helper function
to do the analysis.  For each environment variable, it counts the number
of times each colon-delimited entry occurs in that environment variable
and prints them out:

=2D-8<---------------cut here---------------start------------->8---
count_env_var_occurrences ()=20
{=20
    for environment_variable in $(cat $1 | cut -d =3D -f 1 | sort);
    do
        echo $environment_variable;
        cat $1 | grep ^${environment_variable}=3D | cut -d =3D -f 2 | tr : =
'\n' | sort | uniq -c;
    done
}
=2D-8<---------------cut here---------------end--------------->8---

Then I ran it, and got the following results:

=2D-8<---------------cut here---------------start------------->8---
$ count_env_var_occurrences /tmp/myenv=20
_
      1 /run/current-system/profile/bin/env
DBUS_FATAL_WARNINGS
      1 0
DBUS_SESSION_BUS_ADDRESS
      1 abstract
      1 unix
DISPLAY
      1=20
      1 0.0
GIO_EXTRA_MODULES
      9 /gnu/store/lbkdykh3aa1469li01rwyya02q50r3b9-glib-2.46.1/lib/gio/mod=
ules
      1 /gnu/store/ygn4vavcgr79p86jrlmvdycjs81ki4dl-dconf-0.24.0/lib/gio/mo=
dules
      1 /run/current-system/profile/lib/gio/modules
GIT_SSL_CAINFO
      1 /etc/ssl/certs/ca-certificates.crt
GI_TYPELIB_PATH
      1 /gnu/store/1sp33d4j5gx2xd64mncc30q0x01hjbf4-cogl-1.22.0/lib/girepos=
itory-1.0
      1 /gnu/store/38ir3s81qxhbpa8v8rwf8cbjdcmsr2q0-atk-2.18.0/lib/gireposi=
tory-1.0
      1 /gnu/store/3k8lhk39979kbi3m26fa191wq5jgxf7f-polkit-0.113/lib/girepo=
sitory-1.0
      1 /gnu/store/5l1fab8vi6zpiy8m61aiv2qbr8gfsjha-json-glib-1.0.4/lib/gir=
epository-1.0
      1 /gnu/store/67a1962vx46b5shf3myxi23jvziwaclj-gdm-3.18.2/lib/gireposi=
tory-1.0
      1 /gnu/store/73wzvqzffyx867r1rbck5w65by6lbapy-gnome-bluetooth-3.18.1/=
lib/girepository-1.0
      1 /gnu/store/apf78hww8abnhsg0pr6d00gc5w1g7y5h-libgweather-3.18.1/lib/=
girepository-1.0
      1 /gnu/store/b2qdk8kxcb6ls2hdbzgv51smljk2bqh3-clutter-1.24.2/lib/gire=
pository-1.0
      1 /gnu/store/bxb7i5qiml1vlxbsks4fxnv4vv5pzac3-gnome-desktop-3.18.1/li=
b/girepository-1.0
      1 /gnu/store/cr289j8247p0mv39j26l4gxbdf6b7g11-network-manager-1.0.10/=
lib/girepository-1.0
      1 /gnu/store/dzdqr0yh7csf3j4ash6akzxjdbqgfln2-network-manager-applet-=
1.0.10/lib/girepository-1.0
      1 /gnu/store/fqp33841n42qn6qx3ma1w9xyq329abyh-gst-plugins-base-1.6.3/=
lib/girepository-1.0
      1 /gnu/store/g7ii95bmy2aq4z5x17wvsqlz4f8lmn5a-gcr-3.18.0/lib/gireposi=
tory-1.0
      1 /gnu/store/h4p0b9qp1v1pxnmlgdpcy53xxddjzajp-gobject-introspection-1=
.46.0/lib/girepository-1.0
      1 /gnu/store/hkl1hwx7cqgb23115rnacin4lywy39fq-libxklavier-5.3/lib/gir=
epository-1.0
      1 /gnu/store/l2qcfja7vspdki8birvm80xs82acm2va-gdk-pixbuf-2.32.3/lib/g=
irepository-1.0
      1 /gnu/store/m67pffz37qvkr63a7d5i92z10cwznsy9-accountsservice-0.6.40/=
lib/girepository-1.0
      1 /gnu/store/mfdgb0i95bf4j89zc4mnnbd6hp3v08yx-at-spi2-core-2.18.1/lib=
/girepository-1.0
      1 /gnu/store/p79p86324sb5yc80m21nk7q8cjsixb3s-libgee-0.18.0/lib/girep=
ository-1.0
      1 /gnu/store/pc9w7sz63d0mims6hbxnzc47g3jy55id-pango-1.38.1/lib/girepo=
sitory-1.0
      1 /gnu/store/pil657vzrprd2bfdhg7q8vhd3f6jwzpb-libsoup-2.52.1/lib/gire=
pository-1.0
      1 /gnu/store/rdmyj3ylsfbw57kpdgi9iz15s7xfzxzr-libsecret-0.18.3/lib/gi=
repository-1.0
      1 /gnu/store/rjhhm5ixkmgqpxfiik6k1rncwrvdz0z1-upower-0.99.3/lib/girep=
ository-1.0
      1 /gnu/store/rsywwl626s8fmmwf154sn2x9si62b4k1-evolution-data-server-3=
.18.2/lib/girepository-1.0
      1 /gnu/store/s1nig50yjs5g6fnbl29dyi0d6cp1vza9-telepathy-glib-0.24.1/l=
ib/girepository-1.0
      1 /gnu/store/sm1i06dhgpkhvgj2bhcn6nfi275slgjz-gsettings-desktop-schem=
as-3.18.0/lib/girepository-1.0
      1 /gnu/store/sqd3q1xq5fsbga00bwhghi9shi7xdaac-gtk+-3.18.2/lib/girepos=
itory-1.0
      1 /gnu/store/vmh2w8bsh5w3arrrkcvb468j98nvbjqf-gstreamer-1.6.3/lib/gir=
epository-1.0
      1 /gnu/store/ymx1l8l2gm1jmljh5y24p4f5gk8i2j3c-caribou-0.4.19/lib/gire=
pository-1.0
      1 /gnu/store/z2dh08qp3k1829dcsz7wcrinccmj6743-ibus-1.5.11/lib/girepos=
itory-1.0
      1 /gnu/store/zlq812qd3cykkizdip0l7qw7m2pffj1h-telepathy-logger-0.8.2/=
lib/girepository-1.0
      1 /gnu/store/zvi3k12q95i992gnvhddqs0iildyz4lp-harfbuzz-1.0.6/lib/gire=
pository-1.0
GJS_DEBUG_OUTPUT
      1 stderr
GJS_DEBUG_TOPICS
      1 JS ERROR;JS LOG
GNOME_DESKTOP_SESSION_ID
      1 this-is-deprecated
GST_PLUGIN_PATH
      1 /home/alice/.guix-profile/lib/gstreamer-1.0
GTK_PATH
      3 /gnu/store/7hdyj0dkzp3dbl878g042g300yycasrx-libcanberra-0.30/lib/gt=
k-3.0
      9 /gnu/store/sqd3q1xq5fsbga00bwhghi9shi7xdaac-gtk+-3.18.2/lib/gtk-3.0
      3 /gnu/store/ymx1l8l2gm1jmljh5y24p4f5gk8i2j3c-caribou-0.4.19/lib/gtk-=
3.0
      3 /gnu/store/z2dh08qp3k1829dcsz7wcrinccmj6743-ibus-1.5.11/lib/gtk-3.0
GUILE_LOAD_COMPILED_PATH
      1 /run/current-system/profile/lib/guile/2.0/ccache
      1 /run/current-system/profile/share/guile/site/2.0
GUILE_LOAD_PATH
      1 /run/current-system/profile/share/guile/site/2.0
GUIX_GTK2_PATH
      1 /run/current-system/profile/lib/gtk-2.0
GUIX_GTK3_PATH
      1 /run/current-system/profile/lib/gtk-3.0
HOME
      1 /home/alice
INFOPATH
      1 /home/alice/.guix-profile/share/info
      2 /run/current-system/profile/share/info
LANG
      1 en_US.UTF-8
LINUX_MODULE_DIRECTORY
      1 /run/booted-system/kernel/lib/modules
LOGNAME
      1 alice
MAIL
      1 /var/mail/alice
MANPATH
      1 /home/alice/.guix-profile/share/man
      2 /run/current-system/profile/share/man
PATH
      1 /gnu/store/a9sqlwcl02z89kh6v5n6yzxvxw5qbs14-glib-2.46.1-bin/bin
      1 /home/alice/.guix-profile/bin
      1 /run/current-system/profile/bin
      1 /run/current-system/profile/sbin
      1 /run/setuid-programs
PS1
      1 \u@\h \w\$=20
PWD
      1 /home/alice
SESSION_MANAGER
      1 local/carbuncle
      1 /tmp/.ICE-unix/383
      1 @/tmp/.ICE-unix/383,unix/carbuncle
SHELL
      1 /gnu/store/7cdd8s466qyjh64m0byq0rz9gk1jid40-bash-4.3.42/bin/bash
SHLVL
      1 2
SSH_AUTH_SOCK
      1 /run/user/30011/keyring/ssh
SSL_CERT_DIR
      1 /etc/ssl/certs
SSL_CERT_FILE
      1 /etc/ssl/certs/ca-certificates.crt
TERM
      1 xterm-256color
TZ
      1 America/Los_Angeles
TZDIR
      1 /gnu/store/n80pk0smpzdlshkcgccgga8xy5p2vwz3-tzdata-2015g/share/zone=
info
USER
      1 alice
VTE_VERSION
      1 4203
WINDOWID
      1 23068678
XAUTHORITY
      1 /home/alice/.Xauthority
XDG_CONFIG_DIRS
      1 /home/alice/.guix-profile/etc/xdg
      1 /run/current-system/profile/etc/xdg
XDG_CURRENT_DESKTOP
      1 GNOME
XDG_DATA_DIRS
      3 /gnu/store/27c82f3szfn2d97ms56hkpsb78q9myhd-gnome-settings-daemon-3=
.18.2/share
      3 /gnu/store/67a1962vx46b5shf3myxi23jvziwaclj-gdm-3.18.2/share
      3 /gnu/store/73wzvqzffyx867r1rbck5w65by6lbapy-gnome-bluetooth-3.18.1/=
share
      3 /gnu/store/apf78hww8abnhsg0pr6d00gc5w1g7y5h-libgweather-3.18.1/share
      5 /gnu/store/bahndy6sxfxw6g49djc10mpa7292na40-gnome-session-3.18.1.2/=
share
      3 /gnu/store/dzdqr0yh7csf3j4ash6akzxjdbqgfln2-network-manager-applet-=
1.0.10/share
      3 /gnu/store/g7ii95bmy2aq4z5x17wvsqlz4f8lmn5a-gcr-3.18.0/share
      3 /gnu/store/kc8j8zcwjzr04nlkm16gy44a7vfr26i8-mutter-3.18.1/share
      3 /gnu/store/km25kxpv999ihj058xnvniwycl1zhajl-gnome-control-center-3.=
18.2/share
      9 /gnu/store/lbkdykh3aa1469li01rwyya02q50r3b9-glib-2.46.1/share
      3 /gnu/store/rsywwl626s8fmmwf154sn2x9si62b4k1-evolution-data-server-3=
.18.2/share
      9 /gnu/store/sm1i06dhgpkhvgj2bhcn6nfi275slgjz-gsettings-desktop-schem=
as-3.18.0/share
      9 /gnu/store/sqd3q1xq5fsbga00bwhghi9shi7xdaac-gtk+-3.18.2/share
      1 /gnu/store/x2hz7q806ry8lmwdya0jlff01w7djbn2-gnome-terminal-3.18.2/s=
hare
      3 /gnu/store/xnkkvlwvwbv2zzvbca3sclf41m6jxzza-gnome-shell-3.18.3/share
      3 /gnu/store/ymx1l8l2gm1jmljh5y24p4f5gk8i2j3c-caribou-0.4.19/share
      3 /gnu/store/z2dh08qp3k1829dcsz7wcrinccmj6743-ibus-1.5.11/share
      3 /gnu/store/zlq812qd3cykkizdip0l7qw7m2pffj1h-telepathy-logger-0.8.2/=
share
      1 /home/alice/.guix-profile/share
      2 /run/current-system/profile/share
XDG_MENU_PREFIX
      1 gnome-
XDG_RUNTIME_DIR
      1 /run/user/30011
XDG_SEAT
      1 seat0
XDG_SESSION_ID
      1 c1
XDG_VTNR
      1 7
X_XFCE4_LIB_DIRS
      1 /run/current-system/profile/lib/xfce4
=2D-8<---------------cut here---------------end--------------->8---

As you can see, there are some environment variables with up to 9
duplicate entries.  Is this expected?  Is it a problem?  Why is it
happening?  Assuming that it is not expected and that it is a problem,
how can we prevent it from happening?

I've tried opening multiple subshells (e.g., by running "bash" on the
command line) to see if the number of duplicate entries increases with
each subshell, but that is not the case.  Opening up a new subshell does
not seem to trigger (in the default GuixSD configuration with GNOME, at
least) whatever it is that it causing this duplication.

=2D-=20
Chris

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--=-=-=--




Acknowledgement sent to Chris Marusich <cmmarusich@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#23118; Package guix. Full text available.
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