If the Nix daemon has never been enabled (nix.enable has always been
set to false), the gcroots directory won't exist. If the Nix daemon
is later enabled, the GC roots for booted-system and current-system
will be missing, and they might end up being garbage collected. Since
it's cheap to add GC roots even if the daemon will never be enabled,
let's just always add them so we're okay in the case where the daemon
is enabled later.
Replace sleep() calls where possible, using wait_for_* methods. This
should provide more robustness in cases where tests are running on a
congested system.
Add test coverage for the enableConfiguredRecompile option, checking
that we can compile and exec a new xmonad from a user's local config, as
well as restart the originally configured xmonad.
As I needed a reliable way to wait for recompilation to finish before
proceeding with subsequent test steps, I adjusted the startup behavior
to write a file ("oldXMonad" or "newXMonad") to /etc upon startup, and
replaced some "sleep" calls with "wait_for_file".
Update the example config to show a working example for xmonad 0.17.0, which
added an argument to the `launch` function and adjusted the location of the
recompiled binary.
Since release 1.18.4, the ModemManager daemon no longer automatically
performs the FCC unlock procedure by default. The user must, under their
own responsibility, enable the automatic FCC unlock as shipped by
ModemManager.
`assert` has the annoying property that it dumps a lot of code at the
user without the built in capability to display a nicer message. We have
worked around this using `assertMsg` which would *additionally* display
a nice message. We can do even better: By using `throw` we can make
evaluation fail before assert draws its conclusions and prevent it from
displaying the code making up the assert condition, so we get the nicer
message of `throw` and the syntactical convenience of `assert`.
Before:
nix-repl> python.override { reproducibleBuild = true; stripBytecode = false; }
trace: Deterministic builds require stripping bytecode.
error: assertion (((lib).assertMsg (reproducibleBuild -> stripBytecode)) "Deterministic builds require stripping bytecode.") failed at /home/lukas/src/nix/nixpkgs/pkgs/development/interpreters/python/cpython/2.7/default.nix:45:1
After:
nix-repl> python.override { reproducibleBuild = true; stripBytecode = false; }
error: Deterministic builds require stripping bytecode.
