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49 lines
1.9 KiB
Nix
49 lines
1.9 KiB
Nix
systemOrPkgs:
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let
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inherit (builtins) foldl' unsafeDiscardStringContext elemAt match split concatStringsSep isList substring stringLength length attrNames;
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system = systemOrPkgs.system or systemOrPkgs;
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pipe = val: functions: foldl' (x: f: f x) val functions;
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max = x: y: if x > y then x else y;
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# Minimized copy-paste https://github.com/NixOS/nixpkgs/blob/master/lib/strings.nix#L746-L762
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sanitizeDerivationName = string: pipe (toString string) [
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# Get rid of string context. This is safe under the assumption that the
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# resulting string is only used as a derivation name
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unsafeDiscardStringContext
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# Strip all leading "."
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(x: elemAt (match "\\.*(.*)" x) 0)
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# Split out all invalid characters
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# https://github.com/NixOS/nix/blob/2.3.2/src/libstore/store-api.cc#L85-L112
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# https://github.com/NixOS/nix/blob/2242be83c61788b9c0736a92bb0b5c7bbfc40803/nix-rust/src/store/path.rs#L100-L125
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(split "[^[:alnum:]+._?=-]+")
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# Replace invalid character ranges with a "-"
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(map (s: if isList s then "-" else s))
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(concatStringsSep "")
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# Limit to 211 characters (minus 4 chars for ".drv")
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(x: substring (max (stringLength x - 207) 0) (-1) x)
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# If the result is empty, replace it with "?EMPTY?"
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(x: if stringLength x == 0 then "?EMPTY?" else x)
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];
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# Minimized version of 'sanitizeDerivationName' function
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str = it: if it == null then "null" else (sanitizeDerivationName it);
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test = name: command: derivation {
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inherit name system;
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builder = "/bin/sh";
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args = [ "-c" command ];
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};
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in
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{
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isEqual = a: b:
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if a == b
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then test "SUCCESS__${str a}__IS_EQUAL__${str b}" "echo success > $out"
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else test "FAILURE__${str a}__NOT_EQUAL__${str b}" "exit 1";
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hasKey = attrset: key:
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if attrset ? ${str key}
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then test "SUCCESS__${str key}__EXISTS_IN_ATTRSET" "echo success > $out"
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else test "FAILURE__${str key}__DOES_NOT_EXISTS_IN_ATTRSET_SIZE_${str(length (attrNames attrset))}" "exit 1";
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}
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