Defines the file hierarchy in ~/.opam
type t = OpamTypes.dirnameType of path root
val state_cache : t -> OpamTypes.filenameState cache
val state_cache_dir : t -> OpamTypes.dirnameDirectory containing state cache
val lock : t -> OpamTypes.filenameGlobal lock file for the whole opamroot. Opam should generally read-lock this (e.g. initialisation and format upgrades require a write lock)
val config : t -> OpamFile.Config.t OpamFile.tMain configuration file: $opam/config
val redirected : t -> OpamFilename.tRedirection file for opam root: $opam/redirected-opamroot
val init_config_files : unit -> OpamFile.InitConfig.t OpamFile.t listThe list of configuration files location used by default (/etc/opamrc and ~/.opamrc). More general (lower priority) first.
val config_lock : t -> OpamTypes.filenameLock for updates on the main config file (write lock when changes to switches, repositories lists are expected. No lock needed otherwise)
val repos_lock : t -> OpamTypes.filenameGlobal lock file for the repositories mirrors: $opam/repo/lock
val repos_config : t -> OpamFile.Repos_config.t OpamFile.tGlobal config file for the repositories mirrors: $opam/repo/repos-config
val init : t -> OpamTypes.dirnameInit scripts location: $opam/opam-init
val hooks_dir : t -> OpamTypes.dirnameInstallation dir for configured hooks: $$opam/opam-init/hooks
val log : t -> OpamTypes.dirnameLog dir $opam/log
val backup_dir : t -> OpamTypes.dirnameThe directory where global backups are stored
val backup : t -> OpamTypes.switch_selections OpamFile.tBackup file for state export
val plugins : t -> OpamTypes.dirnameThe directory for plugins data $opam/plugins
val plugins_bin : t -> OpamTypes.dirnameThe directory for shared plugin binaries $opam/plugins/bin
val plugin_bin : t -> OpamTypes.name -> OpamTypes.filenameThe globally installed binary of the given plugin $opam/plugins/bin/opam-foo
val plugin : t -> OpamTypes.name -> OpamTypes.dirnameThe directory for a given plugin's data $opam/plugins/$name. "bin" is forbidden.
val last_env : t -> OpamTypes.dirnameThe last environment used regardless the switch
module type LAYOUT = sig ... endmodule Switch : sig ... endSwitch related paths
module Builddir : sig ... endLocation of package-specific files relative to their build directory