Howto get yum to install only dependencies for a given pakage?

Question

I am looking for a way to have yum install only dependencies for a given package, something like an --prepare-for-install option so I can take a snapshot of the prepared system and test the rpm setup with different options or rebuilds of the package itself on a clean system without having to rely on the rpm uninstall and without downloading the dependencies each time.

You want to _not_ install the package? That doesn't make a whole lot of sense. What are you _really_ trying to do? — Michael Hampton, Sep 17 '12 at 16:27
Hi @Michael, the purpose of not installing the package seems clear to me from the text: preparing a system for package testing. — a1an, Sep 17 '12 at 21:02
Letting aside the constructiveness of discussing what makes sense to whom, how do you test the rpm you develop then? — a1an, Sep 18 '12 at 07:56

score 11 · Accepted Answer · answered Sep 17 '12 at 17:36

11

This might be really dumb but it should work.

PACKAGE=awstats
yum deplist $PACKAGE | grep provider | awk '{print $2}' | sort | uniq | grep -v $PACKAGE | sed ':a;N;$!ba;s/\n/ /g' | xargs yum -y install

answered Sep 17 '12 at 17:36

ablackhat

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Works like a charm, who said dumb isn't good :) Would you explain the :a;N;$!ba; part of the sed command for completeness? Thanks – a1an Sep 18 '12 at 10:30
I honestly don't know, but I pulled it from here, http://stackoverflow.com/a/1252191 – ablackhat Sep 18 '12 at 17:35
Ok, +1 to him also then – a1an Sep 19 '12 at 08:10
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The `sed` expression joins the multiple lines returned by `yum deplist` and the intervening pipeline, transforming it into a single line of space-separated dependencies. It's not actually necessary. You can simplify the above as: `yum deplist $PACKAGE | awk '/provider/ {print $2}' | sort -u | xargs yum -y install`. – larsks Apr 21 '15 at 13:22
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Your solution has an error. Say, if we try to install dependencies for package "mysql" and it has "mysql-common" and "init-mysql" dependencies, we will not see them installed, because they both will be filtered by 'grep -v mysql'. – Nikita Kipriyanov Jan 27 '16 at 13:18
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I believe [this answer](http://unix.stackexchange.com/a/220531/26613) addresses @NikitaKipriyanov's point. – floer_m Jan 18 '17 at 03:44

score 4 · Answer 2 · answered Dec 31 '12 at 02:50

4

yum install $(repoquery --requires <package>)

answered Dec 31 '12 at 02:50

Michael Hampton

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Note that this doesn't account for providers. For instance, I have `git18` which provides `git`; the above command attempts to install `git` as a dependency anyway. – Aaron Adams Nov 30 '13 at 17:53
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I believe [this answer](http://unix.stackexchange.com/a/220531/26613) addresses the valid concern raised by @AaronAdams, above. – floer_m Jan 18 '17 at 03:44

score 0 · Answer 3 · answered Sep 17 '12 at 15:38

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Best option I found until now for my packages is to put an "exit 1" into the %pre scriptlet the first time the package is built but I'm looking for cleaner options, not requiring modification of the package itself.

answered Sep 17 '12 at 15:38

a1an

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Howto get yum to install only dependencies for a given pakage?

3 Answers3