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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.
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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.
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This is a followup to 3f9a12dc082b20426fc740416601b69ea1897193.
* gnu/services/configuration.scm (no-serialization): New variable.
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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.
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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>
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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.
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This resolves a compilation warning introduced with commit bb716e8d9d.
* gnu/services/configuration.scm (configuration->documentation): Use display
to print the string instead of format.
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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.
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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>
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* gnu/services/configuration.scm (define-configuration): Add '%location'.
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* doc/guix.texi (Messaging Services): Update accordingly.
* gnu/services/configuration.scm (serialize-configuration,
serialize-maybe-stem, serialize-package): Return strings or string-valued
gexps (these procedures were only used for their side-effects).
* gnu/services/messaging.scm (serialize-field, serialize-field-list,
enclose-quotes, serialize-raw-content, serialize-ssl-configuration,
serialize-virtualhost-configuration-list,
serialize-int-component-configuration-list,
serialize-ext-component-configuration-list,
serialize-virtualhost-configuration, serialize-int-component-configuration,
serialize-ext-component-configuration, serialize-prosody-configuration):
Return strings or string-valued gexps and stop printing.
(prosody-activation): Use SERIALIZE-PROSODY-CONFIGURATION's return value with
MIXED-TEXT-FILE instead of using its output with PLAIN-FILE.
(serialize-non-negative-integer, serialize-non-negative-integer-list): Convert
numbers to strings.
(file-object?, serialize-file-object, file-object-list?,
serialize-file-object-list): New procedures.
(ssl-configuration)[capath, cafile], (prosody-configuration)[plugin-paths,
groups-file]: Replace FILE-NAME with FILE-OBJECT.
* guix/gexp.scm (file-like?): New exported procedure.
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* doc/guix.texi (Messaging Services): Regenerate it.
* gnu/services/configuration.scm (show-default?): Check VAL rather than DEFAULT.
* gnu/services/messaging.scm (show-default?): Check VAL rather than DEFAULT.
(prosody-configuration)[modules-enabled]: Remove default value from docstring.
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* gnu/services/configuration.scm (id): Replace it using the more concise
version found in messaging.scm.
Signed-off-by: Clément Lassieur <clement@lassieur.org>
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* gnu/services/configuration.scm (id): New procedure extracted from
define-configuration.
(define-maybe): New exported procedure, moved from messaging.scm.
* gnu/services/messaging.scm (define-maybe): Remove it.
(id): Move declaration inside define-all-configurations which is now
the only caller procedure.
Signed-off-by: Clément Lassieur <clement@lassieur.org>
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* gnu/services/configuration.scm (serialize-field, serialize-string)
(serialize-space-separated-string-list, space-separated-string-list?)
(serialize-file-name, file-name?, serialize-boolean): Move these functions...
* gnu/services/cups.scm: ...to this file.
* gnu/services/kerberos.scm: ...to this file.
Configuration syntaxes are very specific to services. Some services may have
the same configuration syntax, but none of them is common enough to be
abstracted in configuration.scm.
Signed-off-by: Clément Lassieur <clement@lassieur.org>
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* gnu/services/messaging.scm: New file.
* gnu/services/configuration.scm: New exported procedures.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add gnu/services/messaging.scm.
* doc/guix.texi (Messaging Services): New section.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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* doc/guix.texi (Kerberos Services)[Krb5 Service]: New subsubheading.
* gnu/services/kerberos.scm (krb5-service-type): New variable.
* gnu/services/configuration.scm (configuration-field-serializer,
configuration-field-getter): Export variables.
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* gnu/services/mail.scm and gnu/services/cups.scm (&configuration-error)
(configuration-error, configuration-field-error)
(configuration-missing-field, configuration-field, serialize-configuration)
(validate-configuration, define-configuration, uglify-field-name)
(serialize-field, serialize-package, serialize-string)
(serialize-space-separated-string-list, space-separated-string-list?)
(serialize-file-name, file-name?, serialize-field-name)
(generate-documentation): Move duplicate code...
* gnu/services/configuration.scm: ...to this new file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add configuration.scm.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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