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Merge pull request #7593 from miallo/ignore-identical-rc-backup-files-for-installation
install-multi-user: ignore profile_target backups that have no change
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1 changed files with 8 additions and 0 deletions
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@ -452,6 +452,14 @@ EOF
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# a row for different files.
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# a row for different files.
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if [ -e "$profile_target$PROFILE_BACKUP_SUFFIX" ]; then
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if [ -e "$profile_target$PROFILE_BACKUP_SUFFIX" ]; then
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# this backup process first released in Nix 2.1
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# this backup process first released in Nix 2.1
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if diff -q "$profile_target$PROFILE_BACKUP_SUFFIX" "$profile_target" > /dev/null; then
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# a backup file for the rc-file exist, but they are identical,
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# so we can safely ignore it and overwrite it with the same
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# content later
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continue
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fi
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failure <<EOF
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failure <<EOF
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I back up shell profile/rc scripts before I add Nix to them.
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I back up shell profile/rc scripts before I add Nix to them.
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I need to back up $profile_target to $profile_target$PROFILE_BACKUP_SUFFIX,
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I need to back up $profile_target to $profile_target$PROFILE_BACKUP_SUFFIX,
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