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slightly reduce repetition by pulling out a mergeAttrs definition

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This commit is contained in:
Jean-Paul Calderone 2023-07-21 11:18:37 -04:00
parent f4949c699a
commit c350d8b736
1 changed files with 16 additions and 12 deletions
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28
flake.nix
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@ -114,6 +114,12 @@
# Make a singleton attribute set from the result of two functions. # Make a singleton attribute set from the result of two functions.
singletonOf = f: g: x: { ${f x} = g x; }; singletonOf = f: g: x: { ${f x} = g x; };
# [attrset] -> attrset
#
# Merge a list of attrset into a single attrset with overlap preferring
# rightmost values.
mergeAttrs = pkgs.lib.foldr pkgs.lib.mergeAttrs {};
# makeRuntimeEnv :: string -> derivation # makeRuntimeEnv :: string -> derivation
# #
# Create a derivation that includes a Python runtime, Tahoe-LAFS, and # Create a derivation that includes a Python runtime, Tahoe-LAFS, and
@ -149,11 +155,11 @@
# flake's "default" package at the derivation corresponding to the # flake's "default" package at the derivation corresponding to the
# default Python version we defined above. The package consists of a # default Python version we defined above. The package consists of a
# Python environment with Tahoe-LAFS available to it. # Python environment with Tahoe-LAFS available to it.
packages = with pkgs.lib; packages =
foldr mergeAttrs {} ([ mergeAttrs (
{ default = self.packages.${system}.${packageName defaultPyVersion}; } [ { default = self.packages.${system}.${packageName defaultPyVersion}; } ]
] ++ (builtins.map makeRuntimeEnv pythonVersions) ++ (builtins.map makeRuntimeEnv pythonVersions)
++ (builtins.map (singletonOf unitTestName makeTestEnv) pythonVersions) ++ (builtins.map (singletonOf unitTestName makeTestEnv) pythonVersions)
); );
# The flake's app outputs. We'll define a version of an app for running # The flake's app outputs. We'll define a version of an app for running
@ -208,13 +214,11 @@
}; };
}; };
in in
with pkgs.lib;
# Merge a default app definition with the rest of the apps. # Merge a default app definition with the rest of the apps.
foldr mergeAttrs mergeAttrs (
{ default = self.apps.${system}."tahoe-python3"; } [ { default = self.apps.${system}."tahoe-python3"; } ]
( ++ (builtins.map makeUnitTestsApp pythonVersions)
(builtins.map makeUnitTestsApp pythonVersions) ++ ++ (builtins.map makeTahoeApp pythonVersions)
(builtins.map makeTahoeApp pythonVersions) );
);
})); }));
} }