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programs.ssh: Use nullable types for optional forward attrs (#1946)

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Attempting to build a flake configuration using `ssh.remoteForwards' results in
evaluation errors when `port' is undefined, as `!(entry ? port)' evaluates to
false. This was verified in the nix repl, and also occurs for `nix flake
check'.

Set optional attrs in `bindOptions' and `forwardModule' to `null' by default
and adjust the assertion to check for `null' instead of attr definitions.
This commit is contained in:
Tad Fisher 2021-04-27 14:16:33 -07:00 committed by GitHub
parent d437baa41c
commit 18ad12d52b
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1 changed files with 7 additions and 4 deletions
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11
modules/programs/ssh.nix
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@ -26,7 +26,8 @@ let
};
port = mkOption {
type = types.port;
type = types.nullOr types.port;
default = null;
example = 8080;
description = "Specifies port number to bind on bind address.";
};
@ -42,13 +43,15 @@ let
host = {
address = mkOption {
type = types.str;
type = types.nullOr types.str;
default = null;
example = "example.org";
description = "The address where to forward the traffic to.";
};
port = mkOption {
type = types.port;
type = types.nullOr types.port;
default = null;
example = 80;
description = "Specifies port number to forward the traffic to.";
};
@ -450,7 +453,7 @@ in
any' = pred: items: if items == [] then true else any pred items;
# Check that if `entry.address` is defined, and is a path, that `entry.port` has not
# been defined.
noPathWithPort = entry: entry ? address && isPath entry.address -> !(entry ? port);
noPathWithPort = entry: entry.address != null && isPath entry.address -> entry.port == null;
checkDynamic = block: any' noPathWithPort block.dynamicForwards;
checkBindAndHost = fwd: noPathWithPort fwd.bind && noPathWithPort fwd.host;
checkLocal = block: any' checkBindAndHost block.localForwards;