APT-CUDF.CONF(5)

✨ apt-cudf.conf — the config file glow-up ✨

okay bestie, we're in section 5 of the manual today (that's the "file formats" section, so this is literally about a config file, not a command 💅), from the DOSE Tools crew.

🌸 NAME 🌸

apt-cudf.conf — it's the configuration file for apt-cudf, periodt.

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🦋 DESCRIPTION 🦋

So here's the vibe: this config file lets you set default optimization criteria for all the solvers that apt-cudf knows about. That's it, that's the whole assignment. One file, set your defaults, serve looks for every solver at once. iconic behavior, honestly.

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💖 SYNTAX 💖

the way this file is just lil keyword lines... obsessed. here's every shape a line can take:

🎀 solver lines

solver: <solver list> | '*'

You hand it a comma-separated list of solvers. And if you use the * character? That makes the optimization criteria the default for every solver that doesn't have a more specific definition — a little catch-all moment, no cap. 👑

🎀 action defaults

upgrade: <optimization criteria>
dist-upgrade: <optimization criteria>
install: <optimization criteria>
remove: <optimization criteria>

These are the default optimization criteria associated to apt-get actions — so yes, upgrade, dist-upgrade, install, remove, each get their own line. 💫

⚠️ heads up though — the optimization criteria is solver specific. If you specify an incorrect criteria, the underlying cudf solver is gonna throw an error at you. 😭 So please, please go read the solver's own man page for the correct syntax before you type anything. iykyk.

🎀 shortcuts

trendy: <optimization criteria>
paranoid: <optimization criteria>
<keyword>: <optimization criteria>

This is where it gets fun 🧚 — you get to define a shortcut for an optimization criteria. Then apt-get can use that shortcut to pass a specific optimization criteria along to a cudf solver. look at you, being efficient.

like, for example:

apt-get install gnome --solver aspcud -o "APT::Solver::aspcud::Preferences=trendy"

see?? trendy doing all the heavy lifting. main character energy fr fr. 💅

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🔥 EXAMPLE 🔥

here's a whole little config serving realness:

solver: mccs-cbc , mccs-lpsolve
upgrade: -lex[-new,-removed,-notuptodate]
dist-upgrade: -lex[-notuptodate,-new]
install: -lex[-removed,-changed]
remove: -lex[-removed,-changed]
trendy: -lex[-removed,-notuptodate,-unsat_recommends,-new]
paranoid: -lex[-removed,-changed]

and then the catch-all * version, for when you want these to hit everybody:

solver: *
upgrade: -new,-removed,-notuptodate
dist-upgrade: -notuptodate,-new
install: -removed,-changed
remove: -removed,-changed
trendy: -removed,-notuptodate,-unsat_recommends,-new
paranoid: -removed,-changed

see how the second block drops the -lex[...] wrapper? cute. copy responsibly tho. 🍓

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🌈 SEE ALSO 🌈

go read these next, bestie, they're the supporting cast:

• apt-cudf(8)
• apt-get(8)
• update-cudf-solvers(8)
• README.cudf-solvers <file:///usr/share/doc/apt-cudf/README.cudf-solvers>
• README.Debian <file:///usr/share/doc/apt-cudf/README.Debian>

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👑 AUTHOR 👑

giving credit where it's due, as we always do:

• Copyright: (C) 2011 Pietro Abate <pietro.abate@pps.jussieu.fr>
• Copyright: (C) 2011 Stefano Zacchiroli <zack@debian.org>

License: GNU Lesser General Public License (GPL), version 3 or above

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and that's the whole page!! 🫶 this was the apt-cudf(5) manual page from the DOSE Tools era, dated 2026-07-06 — love that for us. now go configure your solvers and slay 💖✨