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m (define-maybe-helper): Check against the 'unset symbol. (normalize-field-type+def): Adjust value to 'unset. (define-configuration-helper): Use 'unset as the default value thunk. * gnu/services/file-sharing.scm (serialize-maybe-string): Check against the 'unset symbol. (serialize-maybe-file-object): Likewise. * gnu/services/messaging.scm (define-all-configurations): Use 'unset as value. (raw-content?): Check against 'unset symbol. (prosody-configuration)[http-max-content-size]: Default to 'unset. [http-external-url]: Likewise. [mod-muc]: Likewise. [raw-content]: Likewise. * gnu/services/networking.scm (opendht-configuration): Adjust documentation. * gnu/services/telephony.scm (jami-shepherd-services): Replace *undefined* with the 'unset symbol. * tests/services/configuration.scm ("maybe type, no default"): Check against the 'unset symbol. * doc/guix.texi: Regenerate the opendht-configuration, openvpn-client-configuration and openvpn-server-configuration documentation. Maxim Cournoyer 2022-06-24services: configuration: Remove 'validate-configuration'....Now that configuration records use the 'sanitize' property for each field, 'validate-configuration' has become useless because it's impossible to construct an invalid configuration record. * gnu/services/configuration.scm (validate-configuration): Remove. * gnu/services/mail.scm (dovecot-service): Remove call. * gnu/services/vpn.scm (openvpn-client-service) (openvpn-server-service): Likewise. * doc/guix.texi (Complex Configurations): Remove documentation. Ludovic Courtès 2022-06-24services: configuration: Report the location of field type errors....Previously field type errors would be reported in a non-standard way, and without any source location information. This fixes it. * gnu/services/configuration.scm (configuration-field-error): Add a 'loc' parameter and honor it. Use 'formatted-message' instead of plain 'format'. (define-configuration-helper)[field-sanitizer]: New procedure. Use it. Use STEM as the identifier of the syntactic constructor of the record type. Add a 'sanitize' property to each field. Remove now useless STEM macro that would call 'validate-configuration'. * gnu/services/mail.scm (serialize-listener-configuration): Adjust to new 'configuration-field-error' prototype. * tests/services/configuration.scm ("wrong type for a field"): New test. * po/guix/POTFILES.in: Add gnu/services/configuration.scm. Ludovic Courtès 2022-06-15services: configuration: Use *unspecified* instead of 'disabled....Use *unspecified* as a marker for field values that have not been set. Rationale: 'disabled may easily clash with user values for boolean fields, is confusing (i.e. its meaning is *not* boolean false, but unspecified) and it also passes silently through the symbol? predicate of a field of type symbol. * gnu/services/configuration.scm (configuration-missing-default-value): Renamed from configuration-no-default-value. (define-maybe-helper): Use *unspecified* instead of 'disabled, and make the default value optional. * gnu/home/services/desktop.scm (home-redshift-configuration): Change (maybe-xyz 'disabled) to maybe-xyz. * gnu/services/authentication.scm (nslcd-configuration): Likewise. * gnu/services/cgit.scm (repository-cgit-configuration): Likewise. * gnu/services/file-sharing.scm (serialize-maybe-string) (serialize-maybe-file-object): Use 'unspecified?' instead of (eq? val 'disabled). * gnu/services/messaging.scm (raw-content?): Likewise. (ssl-configuration): Change (maybe-xyz 'disabled) to maybe-xyz. (prosody-configuration): Likewise. * gnu/services/file-sharing.scm (transmission-daemon-configuration): Likewise. * gnu/services/messaging.scm (define-all-configurations): Use *unspecified* instead of 'disabled'. * gnu/services/networking.scm (opendht-configuration): Likewise. * gnu/services/pm.scm (tlp-configuration): Likewise. * gnu/services/telephony.scm (jami-account): Likewise. (jami-configuration): Likewise. * gnu/services/vpn.scm (openvpn-client-configuration): Likewise. * tests/services/configuration.scm ("maybe type, no default") ("maybe type, with default"): New tests. Signed-off-by: Ludovic Courtès <ludo@gnu.org> Attila Lendvai 2022-06-15services: configuration: Support (field1 maybe-number "") format....As opposed to explicitly using 'disabled as value, or using the (field1 (maybe-number) "") format. It's mostly the work of Maxime Devos shared under #54674, with some modifications by Attila Lendvai. * gnu/services/configuration.scm (normalize-field-type+def): New function. (define-configuration-helper) (define-configuration): Support new field format. * tests/services/configuration.scm (config-with-maybe-number->string): New function. ("maybe value serialization of the instance"): New test. ("maybe value serialization of the instance, unspecified"): New test. Signed-off-by: Ludovic Courtès <ludo@gnu.org> Attila Lendvai 2021-11-01services: configuration: Fix interpose implementation....* gnu/services/configuration.scm (interpose, serialize-text-config): Fix interpose implementation, move file-like object code to serialize-text-config. Signed-off-by: Oleg Pykhalov <go.wigust@gmail.com> Andrew Tropin 2021-10-09home: services: configuration: Support file-like objects....* gnu/home/services/configuration.scm (interpose): Operate only with file-like objects. (string-or-gexp?): Delete procedure. (serialize-string-or-gexp): Rename to 'serialize-file-like'. (text-config?): Call 'file-like' intead of 'string-or-gexp?'. * guix/scripts/home/import.scm: (generate-bash-module+configuration): Don't call slurp-file-gexp. * gnu/home/services/configuration.scm: Move content ... * gnu/services/configuration.scm: here. * gnu/home/services/shells.scm: Delete (gnu home services configuration). * gnu/home/services/xdg.scm: Same. * gnu/local.mk: Same. * tests/guix-home.sh: Test home-bash-service-type and extension with home-bash-extension. Oleg Pykhalov 2021-08-02services: configuration: Derive the default value from the package variable....If the type of a configuration field is a package, show the name of its package *variable* as the default value. * gnu/services/configuration.scm (generate-documentation){show-default} {package->symbol}: New nested procedures. Use them to format the field entries. Co-authored-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Xinglu Chen 2021-08-02services: configuration: Uniformize the generated documentation....Make the formatting of the generated docs more consistent with the rest of the docs in the “Services” section of the manual. * gnu/services/configuration (generate-documentation): Represent the data type documentation of a field using a DEFTP table rather than DEFTYPEVR elements. Modified-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Xinglu Chen 2021-06-29services: configuration: Allow specifying prefix for serializer names....Sometimes two configurations might have the same types for their field values, but the values might be serialized in two completely different ways (e.g. because the two programs have different configuration languages). An example of this would be the ‘serialize-boolean’ procedure in (gnu services mail) and (gnu services getmail). They both serialize a boolean value, but because the Dovecot’s configuration language has a different syntax to the configuration language for Getmail, two different procedures have to be defined. One way to workaround this would be to specify custom serializers for many fields in order to separate the serialization of the values that have the same type but serialize in different ways. This could get very tedious, especially if there are many configurations in the same module. Another way would be to move one of the configurations to its own module, like what was done with (gnu services getmail). However, this would mean that there would be multiple modules containing configurations for related programs, e.g. we have (gnu services mail) and (gnu services getmail), it doesn’t make much sense to keep the Getmail configuration in its own module. This patch will allow one to write something like this: (define-configuration foo-configuration (bar (string "bob") "Option bar.") (prefix bar-)) and the value of the ‘bar’ field would be serialized using a procedure named ‘bar-serialize-string’ instead of just ‘serialize-string’. * gnu/services/configuration.scm (define-maybe-helper): Accept ‘prefix’ argument for using serializer with custom prefix. (define-maybe): Pattern match on ‘prefix’ literal. (define-configuration-helper): Accept ‘prefix’ argument for using serializer with custom prefix. (define-configuration): Pattern match on ‘prefix’ literal. * tests/services/configuration.scm ("serialize-configuration with prefix"): New test. Signed-off-by: Ludovic Courtès <ludo@gnu.org> Xinglu Chen 2021-05-17services: configuration: Add a define-configuration/no-serialization syntax....This is added for convenience and for uniformity with the define-maybe/no-serialization syntax introduced in the previous commit. * gnu/services/configuration.scm (define-configuration/no-serialization): New syntax. Maxim Cournoyer 2021-05-17services: configuration: Add a define-maybe/no-serialization syntax....Before this change, using define-maybe along define-configuration with the no-serialization syntactic keyword would result in the following warning: warning: possibly unbound variable `VARIABLE-NAME' This change introduces the define-maybe/no-serialization variant that does away with defining a serialization helper procedure, which makes it possible to avoid the above warning. * gnu/services/configuration.scm (define-maybe/no-serialization): New syntax. (define-maybe-helper): New procedure. (define-maybe): Define syntax using the above procedure. * tests/services/configuration.scm (tests): Fix module name. (custom-number-serializer): Do not print to standard output. (maybe-number?, serialize-maybe-number): New procedures defined via the define-maybe macro. (config-with-maybe-number): New configuration. (serialize-number): New procedure. ("maybe value serialization"): New test. (maybe-string?): New procedure defined via the define-maybe/no-serialization macro. (config-with-maybe-string/no-serialization): New configuration. ("maybe value without serialization no procedure bound"): New test. Maxim Cournoyer 2021-05-08services: configuration: Export 'no-serialization' syntactic keyword....This is a followup to 3f9a12dc082b20426fc740416601b69ea1897193. * gnu/services/configuration.scm (no-serialization): New variable. Ludovic Courtès 2021-05-08services: configuration: Fix %location accessor name....The non-hygienic binding of the source location accessor was set to '-location'; in modules where multiple configurations were defined, it would cause compilation warnings such as: gnu/services/mail.scm:175:0: warning: shadows previous definition of `%-location-procedure' at gnu/services/mail.scm:165:0 * gnu/services/configuration.scm (define-configuration-helper) <id>: Add a missing #'stem argument to use the configuration name as a prefix to the location accessor identifier. Maxim Cournoyer 2021-05-08services: configuration: Allow specifying a custom serializer....In some cases, rather than globally disabling serialization, it may be more appropriate to disable or otherwise alter the serialization procedure of a specific field. In large module, multiple configurations may also exist that would need to alter the default serialization procedure, which is named after the field type. Being able to specify a per-field serialization procedure provides more flexibility. * gnu/services/configuration.scm (define-configuration): Add an optional pattern variable to allow specifying a custom serialization procedure. (define-configuration-helper) <field-serializer>: Use it to transform the syntax. (empty-serializer): New procedure. (serialize-package): Alias to ‘empty-serializer’. Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Xinglu Chen 2021-05-08services: configuration: Allow disabling serialization....Serialization is not always useful, for example when deriving command line arguments from a configuration. This change provides a way to turn it off, which removes the need to define a bunch of dummy serialization procedures. Credit goes to Andrew Gierth (RhodiumToad) from #guile for providing the solution. Thank you! * gnu/services/configuration.scm (define-configuration-helper): New procedure. (define-configuration) <no-serialization>: New syntactic keyword. Use it in a new pattern. Refactor the macro so that it makes use of the above helper procedure. Maxim Cournoyer 2021-05-08services: configuration: Avoid a compilation warning....This resolves a compilation warning introduced with commit bb716e8d9d. * gnu/services/configuration.scm (configuration->documentation): Use display to print the string instead of format. Maxim Cournoyer 2021-05-07services: configuration: Add a new helper to ease generating documentation....The original (undocumented) procedure to generate the doc has a difficult to grasp interface; add a simpler one on top of it. * gnu/services/configuration.scm (configuration->documentation): New procedure. Maxim Cournoyer 2021-05-07services: configuration: Support fields without default values....Not all fields in a configuration have a sensible default value. This changes makes it possible to omit a default value for a configuration field, requiring the user to provide a value. * gnu/services/configuration.scm (configuration-missing-field): New procedure. (define-configuration): Make default value optional. Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com> Xinglu Chen