a649cbca09
Extract argument-handling utility functions to prepare for adding
resholveScript* functions.
This tracks upstream work, but I broke it up a little more semantically here
in case it aids review. See:
6aab748205
75 lines
2.8 KiB
Nix
75 lines
2.8 KiB
Nix
{ lib, resholve, binlore }:
|
|
|
|
rec {
|
|
/* These functions break up the work of partially validating the
|
|
'solutions' attrset and massaging it into env/cli args.
|
|
|
|
Note: some of the left-most args do not *have* to be passed as
|
|
deep as they are, but I've done so to provide more error context
|
|
*/
|
|
|
|
# for brevity / line length
|
|
spaces = l: builtins.concatStringsSep " " l;
|
|
semicolons = l: builtins.concatStringsSep ";" l;
|
|
|
|
/* Throw a fit with dotted attr path context */
|
|
nope = path: msg:
|
|
throw "${builtins.concatStringsSep "." path}: ${msg}";
|
|
|
|
/* Special-case directive value representations by type */
|
|
makeDirective = solution: env: name: val:
|
|
if builtins.isInt val then builtins.toString val
|
|
else if builtins.isString val then name
|
|
else if true == val then name
|
|
else if false == val then "" # omit!
|
|
else if null == val then "" # omit!
|
|
else if builtins.isList val then "${name}:${semicolons val}"
|
|
else nope [ solution env name ] "unexpected type: ${builtins.typeOf val}";
|
|
|
|
/* Build fake/fix/keep directives from Nix types */
|
|
makeDirectives = solution: env: val:
|
|
lib.mapAttrsToList (makeDirective solution env) val;
|
|
|
|
/* Special-case value representation by type/name */
|
|
makeEnvVal = solution: env: val:
|
|
if env == "inputs" then lib.makeBinPath val
|
|
else if builtins.isString val then val
|
|
else if builtins.isList val then spaces val
|
|
else if builtins.isAttrs val then spaces (makeDirectives solution env val)
|
|
else nope [ solution env ] "unexpected type: ${builtins.typeOf val}";
|
|
|
|
/* Shell-format each env value */
|
|
shellEnv = solution: env: value:
|
|
lib.escapeShellArg (makeEnvVal solution env value);
|
|
|
|
/* Build a single ENV=val pair */
|
|
makeEnv = solution: env: value:
|
|
"RESHOLVE_${lib.toUpper env}=${shellEnv solution env value}";
|
|
|
|
/* Discard attrs claimed by makeArgs */
|
|
removeCliArgs = value:
|
|
removeAttrs value [ "scripts" "flags" ];
|
|
|
|
/* Verify required arguments are present */
|
|
validateSolution = { scripts, inputs, interpreter, ... }: true;
|
|
|
|
/* Pull out specific solution keys to build ENV=val pairs */
|
|
makeEnvs = solution: value:
|
|
spaces (lib.mapAttrsToList (makeEnv solution) (removeCliArgs value));
|
|
|
|
/* Pull out specific solution keys to build CLI argstring */
|
|
makeArgs = { flags ? [ ], scripts, ... }:
|
|
spaces (flags ++ scripts);
|
|
|
|
/* Build a single resholve invocation */
|
|
makeInvocation = solution: value:
|
|
if validateSolution value then
|
|
# we pass resholve a directory
|
|
"RESHOLVE_LORE=${binlore.collect { drvs = value.inputs; } } ${makeEnvs solution value} ${resholve}/bin/resholve --overwrite ${makeArgs value}"
|
|
else throw "invalid solution"; # shouldn't trigger for now
|
|
|
|
/* Build resholve invocation for each solution. */
|
|
makeCommands = solutions:
|
|
lib.mapAttrsToList makeInvocation solutions;
|
|
}
|