diff --git a/COPYING b/COPYING
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+++ b/COPYING
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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,7 +1,18 @@
 # dnf-repo releases
 
+## 0.6 (2024-04-22)
+- switch license from BSD to GPLv3+
+- add --only option to only --repo enable certain repos
+- add --dnf4 switch to avoid dnf5
+- --add-copr: copr is now available while being added
+- selectRepo: use left fold to not reverse order of repo actions
+- normalize copr name internally
+- error if /etc/yum.repo.d doesn't exist
+- fix 0.5.6 regression: error again when no matching repo
+- --list output now takes --only into account properly
+
 ## 0.5.6 (2024-04-18)
-- --add-copr now supports non-fedora copr's and downloads .repo with curl
+- --add-copr now supports non-fedora copr servers and downloads .repo with curl
 - with --add-copr can override --osname OS and --releasever VERSION
 - use dnf5 if available
 - --expire now enables the repo for the invocation
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
--- a/LICENSE
+++ /dev/null
@@ -1,30 +0,0 @@
-Copyright (c) 2022, Jens Petersen
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-
-    * Neither the name of Jens Petersen nor the names of other
-      contributors may be used to endorse or promote products derived
-      from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -14,29 +14,31 @@
 Changes to repos' enabled states can be saved too.
 It is also possible to expire repo caches individually.
 
-There are also smart options to enable/disable testing/modular repos
-(and even source/debuginfo repos), and also to a Copr repo or Koji repo file.
+There are also smart options to enable/disable testing repos
+(and even source/debuginfo repos),
+and also to add Copr repo or Koji repo file.
 
 ## Help
 
 `$ dnf-repo --version`
 ```
-0.5.6
+0.6
 ```
 `$ dnf-repo --help`
 ```
 DNF wrapper repo tool
 
 Usage: dnf-repo [--version] [-n|--dryrun] [-q|--quiet] [-D|--debug] [-l|--list]
-                [-s|--save] [(-w|--weak-deps) | (-W|--no-weak-deps)] [--exact]
+                [-s|--save] [--dnf4] [(-w|--weak-deps) | (-W|--no-weak-deps)]
+                [--exact]
                 [(-d|--disable REPOPAT) | (-e|--enable REPOPAT) |
-                  (-x|--expire REPOPAT) | (-X|--clear-expires) |
-                  (-E|--delete-repofile REPOPAT) | (-t|--enable-testing) |
-                  (-T|--disable-testing) | (-m|--enable-modular) |
-                  (-M|--disable-modular) | --enable-debuginfo |
-                  --disable-debuginfo | --enable-source | --disable-source |
-                  (-c|--add-copr COPR) [--osname OSNAME]
-                  [--releasever RELEASEVER] |
+                  (-o|--only REPOPAT) | (-x|--expire REPOPAT) |
+                  (-X|--clear-expires) | (-E|--delete-repofile REPOPAT) |
+                  (-t|--enable-testing) | (-T|--disable-testing) |
+                  (-m|--enable-modular) | (-M|--disable-modular) |
+                  --enable-debuginfo | --disable-debuginfo | --enable-source |
+                  --disable-source | (-c|--add-copr [SERVER/]COPR/PROJECT)
+                  [--osname OSNAME] [--releasever RELEASEVER] |
                   (-k|--add-koji REPO) | (-u|--repourl URL)] [DNFARGS]
 
   see https://github.com/juhp/dnf-repo#readme
@@ -49,11 +51,13 @@
   -D,--debug               Debug output
   -l,--list                List all repos
   -s,--save                Save the repo enable/disable state
+  --dnf4                   Use dnf4 (if dnf5 available)
   -w,--weak-deps           Use weak dependencies
   -W,--no-weak-deps        Disable weak dependencies
   --exact                  Match repo names exactly
   -d,--disable REPOPAT     Disable repos
   -e,--enable REPOPAT      Enable repos
+  -o,--only REPOPAT        Only use matching repos
   -x,--expire REPOPAT      Expire repo cache
   -X,--clear-expires       Undo cache expirations
   -E,--delete-repofile REPOPAT
@@ -66,11 +70,13 @@
   --disable-debuginfo      Disable debuginfo repos
   --enable-source          Enable source repos
   --disable-source         Disable source repos
-  -c,--add-copr COPR       Create repo file for copr repo
+  -c,--add-copr [SERVER/]COPR/PROJECT
+                           Create repo file for copr repo (defaults to fedora
+                           server)
   --osname OSNAME          Specify OS Name to override (eg epel)
   --releasever RELEASEVER  Specify OS Release Version to override (eg rawhide)
-  -k,--add-koji REPO       Create repo file for koji repo (f40-build, rawhide,
-                           epel9-build, etc)
+  -k,--add-koji REPO       Create repo file for a Fedora koji repo (f40-build,
+                           rawhide, epel9-build, etc)
   -u,--repourl URL         Use temporary repo from a baseurl
 ```
 
@@ -115,6 +121,7 @@
 ```shellsession
 $ dnf-repo --M -d h264 --save
 ```
+(All modular repos were dropped in Fedora 39.)
 
 ### Use only source repos
 ```shellsession
@@ -151,6 +158,10 @@
 An initial `^` (final `$`) in a glob pattern prevents
 the automatic prepending (appending) of `*` before (after) the pattern.
 
+Repo actions expand to a sequence of `--enablerepo=`, `--disablerepo=`,
+`--repo=`, etc, so as usual later settings will overrule conflicting
+earlier settings.
+
 ## Installation
 A copr repo is available:
 <https://copr.fedorainfracloud.org/coprs/petersen/dnf-repo/>
@@ -159,7 +170,7 @@
 Use {cabal,stack,cabal-rpm} install.
 
 ## Contributing
-dnf-repo is currently distributed under a BSD license.
+dnf-repo is distributed under the GPL license version 3 or later.
 
 The source repository is https://github.com/juhp/dnf-repo/
 
diff --git a/dnf-repo.cabal b/dnf-repo.cabal
--- a/dnf-repo.cabal
+++ b/dnf-repo.cabal
@@ -1,11 +1,11 @@
 name:                dnf-repo
-version:             0.5.6
-synopsis:            DNF wrapper tool to control repos
+version:             0.6
+synopsis:            A dnf wrapper with fine control of enabled repos
 description:
         A command-line wrapper of the dnf package manager to
         control the repos enabled for a dnf invocation.
-license:             BSD3
-license-file:        LICENSE
+license:             GPL-3
+license-file:        COPYING
 author:              Jens Petersen <juhpetersen@gmail.com>
 maintainer:          Jens Petersen <juhpetersen@gmail.com>
 copyright:           2022-2024  Jens Petersen <juhpetersen@gmail.com>
@@ -21,7 +21,9 @@
                      ||  == 8.10.7
                      ||  == 9.0.2
                      ||  == 9.2.7
-                     ||  == 9.4.5
+                     ||  == 9.4.8
+                     ||  == 9.6.4
+                     ||  == 9.8.2
 data-dir:            data
 data-files:          koji-REPO.repo
 
@@ -33,6 +35,7 @@
   main-is:             Main.hs
   other-modules:       Paths_dnf_repo
                        ExpireRepos
+                       State
                        Sudo
                        YumRepoFile
   autogen-modules:     Paths_dnf_repo
diff --git a/src/Main.hs b/src/Main.hs
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -9,12 +9,17 @@
 import Data.Char (isDigit)
 import Data.List.Extra
 import Data.Maybe (isJust, mapMaybe, maybeToList)
-import Network.Curl
+import Network.Curl (curlGetString, CurlCode(CurlOK))
 import Network.HTTP.Directory (httpExists', (+/+))
-import SimpleCmd
+import SimpleCmd (cmd, cmdLines, cmdMaybe, error', grep, warning, (+-+),
+#if MIN_VERSION_simple_cmd(0,2,4)
+                  filesWithExtension
+#endif
+                 )
 import SimpleCmdArgs
 import SimplePrompt (yesNo)
-import System.Directory (doesFileExist, findExecutable, withCurrentDirectory,
+import System.Directory (doesDirectoryExist, doesFileExist, findFile,
+                         withCurrentDirectory,
 #if !MIN_VERSION_simple_cmd(0,2,4)
                          listDirectory
 #endif
@@ -27,6 +32,7 @@
 
 import Paths_dnf_repo (getDataFileName, version)
 import ExpireRepos
+import State
 import Sudo
 import YumRepoFile
 
@@ -42,6 +48,7 @@
     <*> switchWith 'D' "debug" "Debug output"
     <*> switchWith 'l' "list" "List all repos"
     <*> switchWith 's' "save" "Save the repo enable/disable state"
+    <*> switchLongWith "dnf4" "Use dnf4 (if dnf5 available)"
     <*> optional (flagWith' True 'w' "weak-deps" "Use weak dependencies" <|>
                   flagWith' False 'W' "no-weak-deps" "Disable weak dependencies")
     <*> switchLongWith "exact" "Match repo names exactly"
@@ -52,11 +59,17 @@
       (fmap . fmap . fmap . fmap) cleanupReponame . strOptionWith
       where
         cleanupReponame =
-          dropWhileEnd (== '/') . dropWhile (== '/') . replace ":" "/"
+          -- FIXME handle copr url too
+          serverAliases . replace "@" "group_" . replace "/" ":" . dropWhileEnd (== '/') . dropWhile (== '/')
 
+        serverAliases ('r':'e':'d':'h':'a':'t':':':copr) =
+          "copr.devel.redhat.com:" ++ copr
+        serverAliases copr = copr
+
     modeOpt =
       DisableRepo <$> repoOptionWith 'd' "disable" "REPOPAT" "Disable repos" <|>
       EnableRepo <$> repoOptionWith 'e' "enable" "REPOPAT" "Enable repos" <|>
+      OnlyRepo <$> repoOptionWith 'o' "only" "REPOPAT" "Only use matching repos" <|>
       ExpireRepo <$> repoOptionWith 'x' "expire" "REPOPAT" "Expire repo cache" <|>
       flagWith' ClearExpires 'X' "clear-expires" "Undo cache expirations" <|>
       DeleteRepo <$> repoOptionWith 'E' "delete-repofile" "REPOPAT" "Remove unwanted .repo file" <|>
@@ -69,10 +82,10 @@
       flagLongWith' (Specific EnableSource) "enable-source" "Enable source repos" <|>
       flagLongWith' (Specific DisableSource) "disable-source" "Disable source repos" <|>
       AddCopr
-      <$> repoOptionWith 'c' "add-copr" "COPR" "Create repo file for copr repo"
+      <$> repoOptionWith 'c' "add-copr" "[SERVER/]COPR/PROJECT" "Create repo file for copr repo (defaults to fedora server)"
       <*> optional (strOptionLongWith "osname" "OSNAME" "Specify OS Name to override (eg epel)")
       <*> optional (strOptionLongWith "releasever" "RELEASEVER" "Specify OS Release Version to override (eg rawhide)") <|>
-      AddKoji <$> repoOptionWith 'k' "add-koji" "REPO" "Create repo file for koji repo (f40-build, rawhide, epel9-build, etc)" <|>
+      AddKoji <$> repoOptionWith 'k' "add-koji" "REPO" "Create repo file for a Fedora koji repo (f40-build, rawhide, epel9-build, etc)" <|>
       RepoURL <$> strOptionWith 'u' "repourl" "URL" "Use temporary repo from a baseurl"
 
 fedoraCopr :: String
@@ -81,25 +94,39 @@
 kojiRepoTemplate :: FilePath
 kojiRepoTemplate = "koji-REPO.repo"
 
+yumReposD :: String
+yumReposD = "/etc/yum.repos.d"
+
+checkSystemPathFile :: String -> IO (Maybe String)
+checkSystemPathFile prog = do
+  let path = splitOn ":" "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
+  fmap takeFileName <$> findFile path prog
+
 -- FIXME both enabling and disabled at the same time
--- FIXME --enable-all-coprs (for updating etc)
 -- FIXME confirm repos if many
 -- FIXME --disable-non-cores (modular,testing,cisco, etc)
-runMain :: Bool -> Bool -> Bool -> Bool -> Bool -> Maybe Bool -> Bool -> [Mode]
-        -> [String] -> IO ()
-runMain dryrun quiet debug listrepos save mweakdeps exact modes args = do
+runMain :: Bool -> Bool -> Bool -> Bool -> Bool -> Bool -> Maybe Bool -> Bool
+        -> [Mode] -> [String] -> IO ()
+runMain dryrun quiet debug listrepos save dnf4 mweakdeps exact modes args = do
   hSetBuffering stdout NoBuffering
-  withCurrentDirectory "/etc/yum.repos.d" $ do
+  unlessM (doesDirectoryExist yumReposD) $
+    error' $ yumReposD +-+ "not found!"
+  withCurrentDirectory yumReposD $ do
     forM_ modes $
       \case
         AddCopr copr mosname mrelease -> addCoprRepo dryrun debug mosname mrelease copr
         AddKoji repo -> addKojiRepo dryrun debug repo
         _ -> return ()
-    repofiles <- filesWithExtension "." "repo"
-    -- when debug $ print repofiles
+    repofiles <- filesWithExtension "./" "repo"
+    when debug $
+      print modes
     nameStates <- sort <$> concatMapM readRepos repofiles
     let actions = selectRepo exact nameStates modes
         moreoutput = not (null args) || null actions || listrepos
+    when (debug && not (null modes)) $
+      if null actions
+      then putStrLn "no actions"
+      else print actions
     unless (null actions || quiet) $ do
       mapM_ putStrLn $ reduceOutput $ mapMaybe (printAction save) actions
       when moreoutput $
@@ -125,14 +152,17 @@
         else do
         let changes = concatMap saveRepo actions
         unless (null changes) $ do
-          ok <- yesNo $ "Save changed repo" ++ " enabled state" ++ ['s' | length changes > 1]
+          ok <- yesNo $ "Save changed repo" +-+ "enabled state" ++ ['s' | length changes > 1]
           when ok $ do
-            mdnf3 <- findExecutable "dnf-3"
+            mdnf3 <- checkSystemPathFile "dnf-3"
             case mdnf3 of
-              -- FIXME cannot combine --disable and --enable
-              Just dnf3 -> doSudo dryrun debug dnf3 $ "config-manager" : changes
-              -- FIXME need to have repo files in changes
-              Nothing -> doSudo dryrun debug "sed" $ "config-manager" : changes
+              Just dnf3 ->
+                -- FIXME cannot combine --disable and --enable
+                doSudo dryrun debug dnf3 $ "config-manager" : changes
+              Nothing ->
+                -- FIXME need to have repo files in changes
+                -- doSudo dryrun debug "sed" $ "config-manager" : changes
+                error' "Saving repo state not yet supported without dnf"
     if null args
       then
       when (null actions || listrepos) $ do
@@ -141,21 +171,21 @@
       else do
       sleep 1
       when save $ putStrLn ""
-      mdnf <- do
-        mdnf5 <- findExecutable "dnf5"
-        case mdnf5 of
-          Just dnf5 -> return $ Just dnf5
-          Nothing -> findExecutable "dnf"
+      mdnf <-
+        if dnf4
+        then checkSystemPathFile "dnf"
+        else
+          maybeM (checkSystemPathFile "dnf") (return . Just) $
+          checkSystemPathFile "dnf5"
       case mdnf of
-        Just dnf -> do
-          when debug $ putStrLn dnf
-          let repoargs = concatMap changeRepo actions
+        Just dnf ->
+          let repoargs = mapMaybe changeRepo actions
               weakdeps = maybe [] (\w -> ["--setopt=install_weak_deps=" ++ show w]) mweakdeps
               quietopt = if quiet then ("-q" :) else id
               cachedir = ["--setopt=cachedir=/var/cache/dnf" </> relver | relver <- maybeToList (maybeReleaseVer args)]
-            in doSudo dryrun debug dnf $ quietopt repoargs ++ cachedir ++ weakdeps ++ map mungeArg args
+          in doSudo dryrun debug dnf $ quietopt repoargs ++ cachedir ++ weakdeps ++ map mungeArg args
         -- FIXME rpm-ostree install supports --enablerepo
-        Nothing -> error' "rpm-ostree not supported"
+        Nothing -> error' "missing dnf (rpm-ostree is not supported)"
   where
     mungeArg :: String -> String
     mungeArg "distrosync" = "distro-sync"
@@ -163,30 +193,18 @@
 
 addCoprRepo :: Bool -> Bool -> Maybe String -> Maybe String -> String -> IO ()
 addCoprRepo dryrun debug mosname mrelease repo = do
-  let (server,owner,project) =
-        case  splitOn "/" repo of
-          [] -> error' "empty repo string"
-          [_] -> error' $ "unqualified repo project:" +-+ repo
-          [o,p] -> (fedoraCopr, o , p)
-          [c,o,p] ->
-            if c == "redhat"
-            then ("copr.devel.redhat.com", o, p)
-            else
-              if '.' `elem` c
-              then (c, o, p)
-              else error' $ "unknown copr server:" +-+ repo
-          _ -> error' $ "unknown copr:" +-+ repo
+  let (server,owner,project) = serverOwnerProject repo
       repofile =
-        "_copr:" ++ server ++ ':' : mungeGroupFile owner ++ ':' : project <.> "repo"
+        "_copr:" ++ server ++ ':' : owner ++ ':' : project <.> "repo"
   whenM (doesFileExist repofile) $
-    error' $ "repo already defined: " ++ repofile
+    error' $ "repo already defined:" +-+ repofile
   osName <- maybe getRpmOSName return mosname
   osVersion <- maybe getRpmOsRelease return mrelease
-  let repofileUrl = "https://" ++ server +/+ "coprs" +/+ mungeGroupUrl owner +/+ project +/+ "repo" +/+ osName ++ '-' : osVersion +/+ mungeGroupFile owner ++ '-' : project <.> "repo"
+  let repofileUrl = "https://" ++ server +/+ "coprs" +/+ mungeGroupUrl owner +/+ project +/+ "repo" +/+ osName ++ '-' : osVersion +/+ owner ++ '-' : project <.> "repo"
   (curlres,curlcontent) <- curlGetString repofileUrl []
   unless (curlres == CurlOK) $
     error' $ "downloading failed of" +-+ repofileUrl
-  putStrLn $ "Setting up copr repo " ++ repo
+  putStrLn $ "Setting up copr repo" +-+ repo
   withTempDir $ \ tmpdir -> do
     let tmpfile = tmpdir </> repofile
     unless dryrun $ writeFile tmpfile $
@@ -195,25 +213,34 @@
     doSudo dryrun debug "cp" [tmpfile, repofile]
     putStrLn ""
   where
-    mungeGroupFile ('@':own) = "group_" ++ own
-    mungeGroupFile own = own
-
-    mungeGroupUrl ('@':own) = "g" +/+ own
+    mungeGroupUrl ('g':'r':'o':'u':'p':'_':own) = "g" +/+ own
     mungeGroupUrl own = own
 
+    serverOwnerProject rpo =
+        case  splitOn ":" rpo of
+          [] -> error' "empty repo string"
+          [_] -> error' $ "unqualified repo project:" +-+ rpo
+          [o,p] -> (fedoraCopr, o , p)
+          [c,o,p] ->
+            if '.' `elem` c
+            then (c, o, p)
+            else error' $ "unknown copr server:" +-+ rpo
+          ["copr",_,_,_] -> serverOwnerProject $ dropPrefix "copr/" rpo
+          _ -> error' $ "unknown copr:" +-+ rpo
+
 addKojiRepo :: Bool -> Bool -> String -> IO ()
 addKojiRepo dryrun debug repo = do
   sysarch <- cmd "rpm" ["--eval", "%{_arch}"]
   -- FIXME repo validation/sanity: not "-k list" or other dnf command
   let repourl = "https://kojipkgs.fedoraproject.org/repos" +/+ repo +/+ "latest" +/+ sysarch ++ "/"
-  unlessM (httpExists' repourl) $ error' $ "no such koji repo: " ++ repourl
+  unlessM (httpExists' repourl) $ error' $ "no such koji repo:" +-+ repourl
   template <- getDataFileName kojiRepoTemplate
   repodef <- cmd "sed" ["-e", "s/@REPO@/" ++ repo ++ "/g", template]
   let repofile = replace "REPO" repo kojiRepoTemplate
   exists <- doesFileExist repofile
   if exists
-    then error' $ "repo already defined: " ++ repofile
-    else putStrLn $ "Setting up koji repo " ++ repo
+    then error' $ "repo already defined:" +-+ repofile
+    else putStrLn $ "Setting up koji repo" +-+ repo
   withTempDir $ \ tmpdir -> do
     let tmpfile = tmpdir </> repofile
     unless dryrun $ writeFile tmpfile repodef
@@ -233,11 +260,11 @@
 
 deleteRepo :: Bool -> Bool -> FilePath -> IO ()
 deleteRepo dryrun debug repofile = do
-  mowned <- cmdMaybe "rpm" ["-qf", "/etc/yum.repos.d" </> repofile]
+  mowned <- cmdMaybe "rpm" ["-qf", yumReposD </> repofile]
   case mowned of
     Just owner -> warning $ repofile +-+ "owned by" +-+ owner
     Nothing -> do
-      ok <- yesNo $ "Remove " ++ takeFileName repofile
+      ok <- yesNo $ "Remove" +-+ takeFileName repofile
       when ok $ do
         doSudo dryrun debug "rm" [repofile]
 
diff --git a/src/State.hs b/src/State.hs
new file mode 100644
--- /dev/null
+++ b/src/State.hs
@@ -0,0 +1,270 @@
+module State (
+  Mode(..),
+  SpecificChange(..),
+  ChangeEnable(Expire,UnExpire,Delete),
+  printAction,
+  reduceOutput,
+  selectRepo,
+  changeRepo,
+  saveRepo,
+  updateState,
+  expiring,
+  deleting
+  )
+where
+
+--import Debug.Trace (traceShowId)
+import Data.Either (partitionEithers)
+import Data.List.Extra (dropPrefix, dropSuffix, foldl',
+                        isPrefixOf, isInfixOf, isSuffixOf, nub,
+                        replace, sortOn, stripInfix)
+import Data.Maybe (mapMaybe)
+import SimpleCmd (error', (+-+))
+import System.FilePath.Glob (compile, match)
+
+import YumRepoFile (RepoState)
+
+data Mode = AddCopr String (Maybe String) (Maybe String) | AddKoji String
+          | RepoURL String
+          | EnableRepo String | DisableRepo String | OnlyRepo String
+          | ExpireRepo String | ClearExpires
+          | DeleteRepo String
+          | Specific SpecificChange
+  deriving (Eq, Ord, Show)
+
+modePattern :: Mode -> Maybe String
+modePattern (AddCopr c _ _) = Just c
+modePattern (AddKoji k) = Just k
+modePattern (RepoURL _) = Nothing
+modePattern (EnableRepo r) = Just r
+modePattern (DisableRepo r) = Just r
+modePattern (OnlyRepo r) = Just r
+modePattern (ExpireRepo r) = Just r
+modePattern ClearExpires = Nothing
+modePattern (DeleteRepo r) = Just r
+modePattern (Specific _) = Nothing
+
+data SpecificChange = EnableModular | DisableModular
+                    | EnableTesting | DisableTesting
+                    | EnableDebuginfo | DisableDebuginfo
+                    | EnableSource | DisableSource
+  deriving (Eq, Ord, Show)
+
+repoSubstr :: SpecificChange -> String
+repoSubstr EnableModular = "-modular"
+repoSubstr DisableModular = "-modular"
+repoSubstr EnableTesting = "-testing"
+repoSubstr DisableTesting = "-testing"
+repoSubstr EnableDebuginfo = "-debuginfo"
+repoSubstr DisableDebuginfo = "-debuginfo"
+repoSubstr EnableSource = "-source"
+repoSubstr DisableSource = "-source"
+
+-- Bool is current repo state
+data ChangeEnable = Disable String Bool
+                  | Enable String Bool
+                  | Only String Bool
+                  | Expire String Bool
+                  | UnExpire
+                  | Delete FilePath Bool
+                  | BaseURL String
+  deriving (Eq,Ord,Show)
+
+printAction :: Bool -> ChangeEnable -> Maybe (Either String String)
+printAction save (Disable r s) =
+  if s
+  then
+    Just $ Right $
+    if save
+    then "disable" +-+ quote r
+    else "with disabled" +-+ quote r
+  else Just $ Left $ quote r +-+ "already disabled"
+printAction save (Enable r s) =
+  if s
+  then
+    Just . Right $
+    if save
+    then "enable" +-+ quote r
+    else "with enabled" +-+ quote r
+  else Just $ Left $ quote r +-+ "already enabled"
+printAction _ (Only r _) =
+  Just . Right $ "with only" +-+ quote r
+printAction _ (Expire r s) =
+  if s
+  then
+    Just . Right $
+    "with enabled" +-+ quote r
+  else Nothing
+printAction _ UnExpire =
+  Just $ Right "unexpire:"
+printAction _ (Delete f s) =
+  if s
+  then Just $ Right $ "delete" +-+ quote f
+  else Just $ Left $ quote f +-+ "deletion skipped"
+printAction _ (BaseURL _) = Nothing
+
+reduceOutput :: [Either String String] -> [String]
+reduceOutput os =
+  case partitionEithers os of
+    (is,[]) -> is
+    (_,cs) -> cs
+
+quote :: String -> String
+quote s = '\'' : s ++ "'"
+
+maybeRepoName :: ChangeEnable -> Maybe (ChangeEnable, String)
+maybeRepoName d@(Disable r _) = Just (d, r)
+maybeRepoName e@(Enable r _) = Just (e, r)
+maybeRepoName o@(Only r _) = Just (o, r)
+maybeRepoName x@(Expire r _) = Just (x, r)
+maybeRepoName UnExpire = Nothing
+maybeRepoName (Delete _ _) = Nothing
+maybeRepoName (BaseURL _) = Nothing
+
+changeRepo :: ChangeEnable -> Maybe String
+changeRepo (Disable r True) = Just $ "--disablerepo=" ++ r
+changeRepo (Enable r True) = Just $ "--enablerepo=" ++ r
+changeRepo (Only r True) = Just $ "--repo=" ++ r
+changeRepo (Expire r True) = Just $ "--enablerepo=" ++ r
+changeRepo (BaseURL url) = Just $ "--repofrompath=" ++ repoUrlName ++ "," ++ url
+  where
+    repoUrlName = replace "/" ":" $
+                  dropSuffix "/" $
+                  dropPrefix "http://" $
+                  dropPrefix "https://" url
+changeRepo _ = Nothing
+
+saveRepo :: ChangeEnable -> [String]
+saveRepo (Disable r True) = ["--disable", r]
+saveRepo (Enable r True) = ["--enable", r]
+saveRepo _ = []
+
+expiring :: ChangeEnable -> Maybe String
+expiring (Expire r _) = Just r
+expiring _ = Nothing
+
+deleting :: ChangeEnable -> Maybe String
+deleting (Delete r True) = Just r
+deleting _ = Nothing
+
+updateState :: [ChangeEnable] -> RepoState -> RepoState
+updateState [] rs = rs
+updateState (ce:ces) re@(repo,(enabled,file)) =
+  case ce of
+    Disable r True | r == repo && enabled -> (repo,(False,file))
+    Enable r True | r == repo && not enabled -> (repo,(True,file))
+    Only r True | r == repo && not enabled -> (repo,(True,file))
+    Only r True | r /= repo && enabled -> (repo,(False,file))
+    _ -> updateState ces re
+
+selectRepo :: Bool -> [RepoState] -> [Mode] -> [ChangeEnable]
+selectRepo exact repostates modes =
+  nub $ foldl' selectRepo' [] (nub modes)
+  where
+    selectRepo' :: [ChangeEnable] -> Mode -> [ChangeEnable]
+    selectRepo' acc mode =
+      let results = nub $ mapMaybe (selectRepoMode mode acc) repostates
+      in
+        case results of
+          [] -> error' ("no match for repo pattern action: " ++ show mode)
+          [_] -> acc ++ results
+          _ ->
+            acc ++
+            case modePattern mode of
+              Nothing -> results
+              Just p ->
+                if isGlob p
+                then results
+                else
+                  let actNames = mapMaybe maybeRepoName results
+                  in
+                    if null actNames
+                    then results
+                    else
+                      let base = head $ sortOn (length . snd) actNames
+                      in
+                        if all ((snd base `isPrefixOf`) . snd) actNames
+                        then [fst base]
+                        else results
+
+    selectRepoMode :: Mode -> [ChangeEnable] -> RepoState
+                   -> Maybe ChangeEnable
+    selectRepoMode mode acc (name,(enabled,file)) =
+      case mode of
+        AddCopr repo _ _ ->
+          maybeChange repo isSuffixOf (not enabled) (Enable name)
+        AddKoji repo ->
+          maybeChange repo isSuffixOf (not enabled) (Enable name)
+        RepoURL url -> Just $ BaseURL url
+        EnableRepo pat ->
+          maybeChange pat matchesRepo (not enabled) (Enable name)
+        DisableRepo pat ->
+          maybeChange pat matchesRepo enabled (Disable name)
+        OnlyRepo pat ->
+          maybeChange pat matchesRepo (not enabled) (Only name)
+        ExpireRepo pat ->
+          maybeChange pat matchesRepo True (Expire name)
+        ClearExpires -> Just UnExpire
+        DeleteRepo pat ->
+          maybeChange pat matchesRepo
+          (not enabled || error ("disable repo before deleting:" +-+ name))
+          (Delete file)
+        Specific change ->
+          let substr =  repoSubstr change in
+            if change `elem`
+               [EnableModular,EnableTesting,EnableDebuginfo,EnableSource]
+            then
+              maybeChange substr
+              (\p n -> p `isInfixOf` n &&
+                       repoStatus acc (removeInfix substr name))
+              (not enabled) (Enable name)
+            else
+              maybeChange substr isInfixOf enabled (Disable name)
+      where
+        maybeChange :: String -> (String -> String -> Bool) -> Bool
+                    -> (Bool -> ChangeEnable) -> Maybe ChangeEnable
+        maybeChange pat matcher state change =
+          if pat `matcher` name
+          then
+            if state
+            then Just $ change True
+            else
+              if isGlob pat
+              then Nothing
+              else Just $ change False
+          else Nothing
+
+    repoStatus :: [ChangeEnable] -> String -> Bool
+    repoStatus acc repo =
+      case lookup repo repostates of
+        Just (enabled,_) ->
+          enabled || Enable repo True `elem` acc
+        Nothing -> False
+
+    isGlob :: String -> Bool
+    isGlob pat = any (`elem` pat) "*?["
+
+    matchesRepo :: String -> String -> Bool
+    matchesRepo "" = error' "empty repo pattern"
+    matchesRepo pat
+      | isGlob pat = (match . compile) $
+        if exact
+        then pat
+        else
+          case ('^' == head pat,'$' == last pat) of
+            (True,True) -> init (tail pat)
+            (True,False) -> tail pat ++ ['*' | last pat /= '*']
+            (False,True) -> ['*' | head pat /= '*'] ++ init pat
+            _ -> ['*' | head pat /= '*'] ++ pat ++ ['*' | last pat /= '*']
+      | exact = (pat ==)
+      | otherwise =
+          case ('^' == head pat,'$' == last pat) of
+            (True,True) -> (init (tail pat) ==)
+            (True,False) -> (tail pat `isPrefixOf`)
+            (False,True) -> (init pat `isSuffixOf`)
+            _ -> (pat `isInfixOf`)
+
+-- adapted from simple-cmd
+removeInfix :: String -> String-> String
+removeInfix inf orig =
+  maybe orig (uncurry (++)) $ stripInfix inf orig
diff --git a/src/YumRepoFile.hs b/src/YumRepoFile.hs
--- a/src/YumRepoFile.hs
+++ b/src/YumRepoFile.hs
@@ -1,261 +1,14 @@
 module YumRepoFile (
-  Mode(..),
-  SpecificChange(..),
   readRepos,
-  RepoState,
-  ChangeEnable(Expire,UnExpire,Delete),
-  printAction,
-  reduceOutput,
-  selectRepo,
-  changeRepo,
-  saveRepo,
-  updateState,
-  expiring,
-  deleting
+  RepoState
   )
 where
 
-import Data.Either (partitionEithers)
-import Data.List.Extra (dropPrefix, dropSuffix,
-                        isPrefixOf, isInfixOf, isSuffixOf, nub,
-                        replace, sortOn, splitOn, stripInfix, trim)
-import Data.Maybe (mapMaybe)
-import SimpleCmd (error')
-import System.FilePath.Glob (compile, match)
+import Data.List.Extra (isPrefixOf, splitOn, trim)
+import SimpleCmd (error', (+-+))
 
 type RepoState = (String,(Bool,FilePath))
 
-data Mode = AddCopr String (Maybe String) (Maybe String) | AddKoji String
-          | RepoURL String
-          | EnableRepo String | DisableRepo String
-          | ExpireRepo String | ClearExpires
-          | DeleteRepo String
-          | Specific SpecificChange
-  deriving (Eq, Ord, Show)
-
-modePattern :: Mode -> Maybe String
-modePattern (AddCopr c _ _) = Just c
-modePattern (AddKoji k) = Just k
-modePattern (RepoURL _) = Nothing
-modePattern (EnableRepo r) = Just r
-modePattern (DisableRepo r) = Just r
-modePattern (ExpireRepo r) = Just r
-modePattern ClearExpires = Nothing
-modePattern (DeleteRepo r) = Just r
-modePattern (Specific _) = Nothing
-
-data SpecificChange = EnableModular | DisableModular
-                    | EnableTesting | DisableTesting
-                    | EnableDebuginfo | DisableDebuginfo
-                    | EnableSource | DisableSource
-  deriving (Eq, Ord, Show)
-
-repoSubstr :: SpecificChange -> String
-repoSubstr EnableModular = "-modular"
-repoSubstr DisableModular = "-modular"
-repoSubstr EnableTesting = "-testing"
-repoSubstr DisableTesting = "-testing"
-repoSubstr EnableDebuginfo = "-debuginfo"
-repoSubstr DisableDebuginfo = "-debuginfo"
-repoSubstr EnableSource = "-source"
-repoSubstr DisableSource = "-source"
-
-data ChangeEnable = Disable String Bool
-                  | Enable String Bool
-                  | Expire String Bool
-                  | UnExpire
-                  | Delete FilePath Bool
-                  | BaseURL String
-  deriving (Eq,Ord,Show)
-
-printAction :: Bool -> ChangeEnable -> Maybe (Either String String)
-printAction save (Disable r s) =
-  if s
-  then
-    Just $ Right $
-    if save
-    then "disable " ++ quote r
-    else "with disabled " ++ quote r
-  else Just $ Left $ quote r ++ " already disabled"
-printAction save (Enable r s) =
-  if s
-  then
-    Just . Right $
-    if save
-    then "enable " ++ quote r
-    else "with enabled " ++ quote r
-  else Just $ Left $ quote r ++ " already enabled"
-printAction _ (Expire r s) =
-  if s
-  then
-    Just . Right $
-    "with enabled " ++ quote r
-  else Nothing
-printAction _ UnExpire =
-  Just $ Right "unexpire:"
-printAction _ (Delete f s) =
-  if s
-  then Just $ Right $ "delete " ++ quote f
-  else Just $ Left $ quote f ++ " deletion skipped"
-printAction _ (BaseURL _) = Nothing
-
-reduceOutput :: [Either String String] -> [String]
-reduceOutput os =
-  case partitionEithers os of
-    (is,[]) -> is
-    (_,cs) -> cs
-
-quote :: String -> String
-quote s = '\'' : s ++ "'"
-
-maybeRepoName :: ChangeEnable -> Maybe (ChangeEnable, String)
-maybeRepoName d@(Disable r _) = Just (d, r)
-maybeRepoName e@(Enable r _) = Just (e, r)
-maybeRepoName x@(Expire r _) = Just (x, r)
-maybeRepoName UnExpire = Nothing
-maybeRepoName (Delete _ _) = Nothing
-maybeRepoName (BaseURL _) = Nothing
-
-changeRepo :: ChangeEnable -> [String]
-changeRepo (Disable r True) = ["--disablerepo", r]
-changeRepo (Enable r True) = ["--enablerepo", r]
-changeRepo (Expire r True) = ["--enablerepo", r]
-changeRepo (BaseURL url) = ["--repofrompath", repoUrlName ++ "," ++ url]
-  where
-    repoUrlName = replace "/" ":" $
-                  dropSuffix "/" $
-                  dropPrefix "http://" $
-                  dropPrefix "https://" url
-
-changeRepo _ = []
-
-saveRepo :: ChangeEnable -> [String]
-saveRepo (Disable r True) = ["--disable", r]
-saveRepo (Enable r True) = ["--enable", r]
-saveRepo _ = []
-
-expiring :: ChangeEnable -> Maybe String
-expiring (Expire r _) = Just r
-expiring _ = Nothing
-
-deleting :: ChangeEnable -> Maybe String
-deleting (Delete r True) = Just r
-deleting _ = Nothing
-
-updateState :: [ChangeEnable] -> RepoState -> RepoState
-updateState [] rs = rs
-updateState (ce:ces) re@(repo,(enabled,file)) =
-  case ce of
-    -- FIXME can probably drop enable/not enabled
-    Disable r True | r == repo && enabled -> (repo,(False,file))
-    Enable r True | r == repo && not enabled -> (repo,(True,file))
-    _ -> updateState ces re
-
-selectRepo :: Bool -> [RepoState] -> [Mode] -> [ChangeEnable]
-selectRepo exact repostates modes =
-  nub $ foldr selectRepo' [] (nub modes)
-  where
-    selectRepo' :: Mode -> [ChangeEnable] -> [ChangeEnable]
-    selectRepo' mode acc =
-      let results = nub $ mapMaybe (selectRepoMode mode acc) repostates
-      in
-        case results of
-          [] -> []
-          [_] -> acc ++ results
-          _ ->
-            acc ++
-            case modePattern mode of
-              Nothing -> results
-              Just p ->
-                if isGlob p
-                then results
-                else
-                  let actNames = mapMaybe maybeRepoName results
-                  in
-                    if null actNames
-                    then results
-                    else
-                      let base = head $ sortOn (length . snd) actNames
-                      in
-                        if all ((snd base `isPrefixOf`) . snd) actNames
-                        then [fst base]
-                        else results
-
-    selectRepoMode :: Mode -> [ChangeEnable] -> RepoState
-                   -> Maybe ChangeEnable
-    selectRepoMode mode acc (name,(enabled,file)) =
-      case mode of
-        AddCopr repo _ _ ->
-          maybeChange repo isSuffixOf (not enabled) (Enable name)
-        AddKoji repo ->
-          maybeChange repo isSuffixOf (not enabled) (Enable name)
-        RepoURL url -> Just $ BaseURL url
-        EnableRepo pat ->
-          maybeChange pat matchesRepo (not enabled) (Enable name)
-        DisableRepo pat ->
-          maybeChange pat matchesRepo enabled (Disable name)
-        ExpireRepo pat ->
-          maybeChange pat matchesRepo True (Expire name)
-        ClearExpires -> Just UnExpire
-        DeleteRepo pat ->
-          maybeChange pat matchesRepo
-          (not enabled || error ("disable repo before deleting: " ++ name))
-          (Delete file)
-        Specific change ->
-          let substr =  repoSubstr change in
-            if change `elem`
-               [EnableModular,EnableTesting,EnableDebuginfo,EnableSource]
-            then
-              maybeChange substr
-              (\p n -> p `isInfixOf` n &&
-                       repoStatus acc (removeInfix substr name))
-              (not enabled) (Enable name)
-            else
-              maybeChange substr isInfixOf enabled (Disable name)
-      where
-        maybeChange :: String -> (String -> String -> Bool) -> Bool
-                    -> (Bool -> ChangeEnable) -> Maybe ChangeEnable
-        maybeChange pat matcher state change =
-          if pat `matcher` name
-          then
-            if state
-            then Just $ change True
-            else
-              if isGlob pat
-              then Nothing
-              else Just $ change False
-          else Nothing
-
-    repoStatus :: [ChangeEnable] -> String -> Bool
-    repoStatus acc repo =
-      case lookup repo repostates of
-        Just (enabled,_) ->
-          enabled || Enable repo True `elem` acc
-        Nothing -> False
-
-    isGlob :: String -> Bool
-    isGlob pat = any (`elem` pat) "*?["
-
-    matchesRepo :: String -> String -> Bool
-    matchesRepo "" = error' "empty repo pattern"
-    matchesRepo pat
-      | isGlob pat = (match . compile) $
-        if exact
-        then pat
-        else
-          case ('^' == head pat,'$' == last pat) of
-            (True,True) -> init (tail pat)
-            (True,False) -> tail pat ++ ['*' | last pat /= '*']
-            (False,True) -> ['*' | head pat /= '*'] ++ init pat
-            _ -> ['*' | head pat /= '*'] ++ pat ++ ['*' | last pat /= '*']
-      | exact = (pat ==)
-      | otherwise =
-          case ('^' == head pat,'$' == last pat) of
-            (True,True) -> (init (tail pat) ==)
-            (True,False) -> (tail pat `isPrefixOf`)
-            (False,True) -> (init pat `isSuffixOf`)
-            _ -> (pat `isInfixOf`)
-
 readRepos :: FilePath -> IO [RepoState]
 readRepos file =
   parseRepos file . lines <$> readFile file
@@ -268,15 +21,15 @@
     Just (section,rest) ->
       let (enabled,more) =
             case dropWhile (not . ("enabled" `isPrefixOf`)) rest of
-              [] -> error' $ "no enabled field for " ++ section
+              [] -> error' $ "no enabled field for" +-+ section
               (e:more') ->
                 case splitOn "=" e of
                   [_,v] ->
                     case trim v of
                       "1" -> (True,more')
                       "0" -> (False,more')
-                      _ -> error' $ "strange enabled state " ++ e ++ " for " ++ section
-                  _ -> error' $ "unknown enabled state " ++ e ++ " for " ++ section
+                      _ -> error' $ "strange enabled state" +-+ e +-+ "for" +-+ section
+                  _ -> error' $ "unknown enabled state" +-+ e +-+ "for" +-+ section
       in (section,(enabled,file)) : parseRepos file more
   where
     nextSection :: [String] -> Maybe (String,[String])
@@ -286,10 +39,5 @@
         ('[' : rest) ->
           if last rest == ']'
           then Just (init rest, ls')
-          else error' $ "bad section " ++ l ++ " in " ++ file
+          else error' $ "bad section" +-+ l +-+ "in" +-+ file
         _ -> nextSection ls'
-
--- adapted from simple-cmd
-removeInfix :: String -> String-> String
-removeInfix inf orig =
-  maybe orig (uncurry (++)) $ stripInfix inf orig
diff --git a/test/tests.hs b/test/tests.hs
--- a/test/tests.hs
+++ b/test/tests.hs
@@ -9,7 +9,6 @@
 tests :: [[String]]
 tests =
   [["-t"]
-  ,["-m"]
   ,["-e", "copr"]
   ,["-e", "openh264"]
   ,["-e", "rawhide"]
