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* machine: Implement 'roll-back-machine'.Jakob L. Kreuze2019-08-15
| | | | | | | | | * gnu/machine.scm (roll-back-machine, &deploy-error, deploy-error?) (deploy-error-should-roll-back) (deploy-error-captured-args): New variable. * gnu/machine/ssh.scm (roll-back-managed-host): New variable. * guix/scripts/deploy.scm (guix-deploy): Roll-back systems when a deployment fails.
* machine: Rename 'system' field.Jakob L. Kreuze2019-08-06
| | | | | | | | * gnu/machine.scm (machine-system): Delete variable. (machine-operating-system): New variable. All callers changed. * doc/guix.texi (Invoking guix deploy): Use the 'machine-operating-system' accessor rather than 'machine-system'.
* gnu: Add machine type for deployment specifications.Jakob L. Kreuze2019-07-06
* gnu/machine.scm: New file. * gnu/machine/ssh.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Add it.