On 2016-02-02 11:45, [email protected] wrote:
On 2016-02-01 14:43, [email protected] wrote:
[email protected] skribis:

I installed cups and xfce. What more do I need?

For printers available on the network as in a typical “enterprise”
setup, nothing more: the “print” dialog in Evince and similar tools will
discover it and do the right thing.

In
https://gnu.org/software/guix/manual/html_node/Services.html#Services
I did not find a service declaration for CUPS.

What is the next step?

For a locally-connected printer you’ll certainly need a CUPS daemon
running, indeed.  I’m not sure exactly what it takes, but it would
clearly be a worthwhile addition!

OK. I gave it a try and this is how far I got:
The manpages and documentation on cups.org is rather useless regarding
installation and formatting of the config-files.

The package installs corrupt config-files according to
$ cupsd -t
"/gnu/store/qs3xymcsgxa68i8m188261rhxsszx7za-cups-2.1.0/etc/cups/cups-files.conf"
contains errors.

I have a running working installation of cups 1.7 on my trisquel 7
machine. I tried copying the working (very similar) configs from there
which the trisquel-cupsd report as 'OK'.
=> It did not help and the error is not as detailed as I would like
and there is no debug option is seems.

Is there a good free non-apple-owned alternative to CUPS I could try instead?

The cupsd.conf I tried is attached. I now also tried this as root and testing with cupsd afterward without any succes:
cp -r /gnu/store/qs3xymcsgxa68i8m188261rhxsszx7za-cups-2.1.0/var/* /var/

Maybe the error is that the socket referenced in cupsd.conf is missing:
"# Only listen for connections from the local machine.
Listen localhost:631
Listen /var/run/cups/cups.sock"

The socket is missing in the store and from the path above. I have no idea yet how to create it manually.

cheers
sdb
#
# Configuration file for the CUPS scheduler.  See "man cupsd.conf" for a
# complete description of this file.
#

# Log general information in error_log - change "warn" to "debug"
# for troubleshooting...
LogLevel warn
#PageLogFormat

# Only listen for connections from the local machine.
Listen localhost:631
Listen /var/run/cups/cups.sock

# Show shared printers on the local network.
Browsing Off
BrowseLocalProtocols dnssd

# Default authentication type, when authentication is required...
DefaultAuthType Basic

# Web interface setting...
WebInterface Yes

# Restrict access to the server...
<Location />
  Order allow,deny
</Location>

# Restrict access to the admin pages...
<Location /admin>
  Order allow,deny
</Location>

# Restrict access to configuration files...
<Location /admin/conf>
  AuthType Default
  Require user @SYSTEM
  Order allow,deny
</Location>

# Set the default printer/job policies...
<Policy default>
  # Job/subscription privacy...
  JobPrivateAccess default
  JobPrivateValues default
  SubscriptionPrivateAccess default
  SubscriptionPrivateValues default

  # Job-related operations must be done by the owner or an administrator...
  <Limit Create-Job Print-Job Print-URI Validate-Job>
    Order deny,allow
  </Limit>

  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs 
Set-Job-Attributes Create-Job-Subscription Renew-Subscription 
Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job 
Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job 
CUPS-Get-Document>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>

  # All administration operations require an administrator to authenticate...
  <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class 
CUPS-Delete-Class CUPS-Set-Default CUPS-Get-Devices>
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  </Limit>

  # All printer operations require a printer operator to authenticate...
  <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer 
Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs 
Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer 
Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs 
CUPS-Reject-Jobs>
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  </Limit>

  # Only the owner or an administrator can cancel or authenticate a job...
  <Limit Cancel-Job CUPS-Authenticate-Job>
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>

  <Limit All>
    Order deny,allow
  </Limit>
</Policy>

# Set the authenticated printer/job policies...
<Policy authenticated>
  # Job/subscription privacy...
  JobPrivateAccess default
  JobPrivateValues default
  SubscriptionPrivateAccess default
  SubscriptionPrivateValues default

  # Job-related operations must be done by the owner or an administrator...
  <Limit Create-Job Print-Job Print-URI Validate-Job>
    AuthType Default
    Order deny,allow
  </Limit>

  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs 
Set-Job-Attributes Create-Job-Subscription Renew-Subscription 
Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job 
Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job 
CUPS-Get-Document>
    AuthType Default
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>

  # All administration operations require an administrator to authenticate...
  <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class 
CUPS-Delete-Class CUPS-Set-Default>
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  </Limit>

  # All printer operations require a printer operator to authenticate...
  <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer 
Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs 
Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer 
Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs 
CUPS-Reject-Jobs>
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  </Limit>

  # Only the owner or an administrator can cancel or authenticate a job...
  <Limit Cancel-Job CUPS-Authenticate-Job>
    AuthType Default
    Require user @OWNER @SYSTEM
    Order deny,allow
  </Limit>

  <Limit All>
    Order deny,allow
  </Limit>
</Policy>

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