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[packages] Explain pre-script isn't actually a shell script

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This commit is contained in:
Adriaan de Groot 2019-08-26 16:42:05 +02:00
parent 56792fdcb5
commit d063d60e37
1 changed files with 22 additions and 6 deletions
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28
src/modules/packages/packages.conf
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@ -31,9 +31,9 @@ backend: dummy
#
# Set "update_db" to 'true' for refreshing the database on the
# target system. On target installations, which got installed by
# unsquashing, a full system update may be needed. Otherwise
# unsquashing, a full system update may be needed. Otherwise
# post-installing additional packages may result in conflicts.
# Therefore set also "update_system" to 'true'.
# Therefore set also "update_system" to 'true'.
#
skip_if_no_internet: false
update_db: true
@ -87,9 +87,25 @@ update_system: false
# pre-script: touch /tmp/installing-vi
# post-script: rm -f /tmp/installing-vi
#
# The pre- and post-scripts are optional, but you cannot leave both out: using
# "package: vi" with neither script option will trick Calamares into
# trying to install a package named "package: vi", which is unlikely to work.
# The pre- and post-scripts are optional, but you cannot leave both out
# if you do use the *package* key: using "package: vi" with neither script
# option will trick Calamares into trying to install a package named
# "package: vi", which is unlikely to work.
#
# The pre- and post-scripts are **not** executed by a shell unless you
# explicitly invoke `/bin/sh` in them. The command-lines are passed
# to exec(), which does not understand shell syntax. In other words:
#
# pre-script: ls | wc -l
#
# Will fail, because `|` is passed as a command-line argument to ls,
# as are `wc`, and `-l`. No shell pipeline is set up, and ls is likely
# to complain. Invoke the shell explicitly:
#
# pre-script: /bin/sh -c \"ls | wc -l\"
#
# The above note on shell-expansion applies to versions up-to-and-including
# Calamares 3.2.12, but will change in future.
#
# Any package name may be localized; this is used to install localization
# packages for software based on the selected system locale. By including
@ -104,7 +120,7 @@ update_system: false
#
# Take care that just plain `LOCALE` will not be replaced, so `foo-LOCALE` will
# be left unchanged, while `foo-$LOCALE` will be changed. However, `foo-LOCALE`
# **will** be removed from the list of packages (i.e. not installed), if
# **will** be removed from the list of packages (i.e. not installed), if
# English is selected. If a non-English locale is selected, then `foo-LOCALE`
# will be installed, unchanged (no language-name-substitution occurs).
#