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{ stdenv, drvSeqL, runExecline, bin
# https://www.mail-archive.com/skaware@list.skarnet.org/msg01256.html
, coreutils }:
let
# lol
writeScript = name: script: runExecline name {
derivationArgs = {
inherit script;
passAsFile = [ "script" ];
preferLocalBuild = true;
allowSubstitutes = false;
};
} [
"importas" "-ui" "s" "scriptPath"
"importas" "-ui" "out" "out"
"foreground" [
"${coreutils}/bin/mv" "$s" "$out"
]
"${bin.s6-chmod}" "0755" "$out"
];
# execline block of depth 1
block = args: builtins.map (arg: " ${arg}") args ++ [ "" ];
# derivation that tests whether a given line exists
# in the given file. Does not use runExecline, because
# that should be tested after all.
fileHasLine = line: file: derivation {
name = "run-execline-test-file-${file.name}-has-line";
inherit (stdenv) system;
builder = bin.execlineIf;
args =
(block [
bin.redirfd "-r" "0" file # read file to stdin
bin.s6-grep "-F" "-q" line # and grep for the line
])
++ [
# if the block succeeded, touch $out
bin.importas "-ui" "out" "out"
bin.s6-touch "$out"
];
preferLocalBuild = true;
allowSubstitutes = false;
};
# basic test that touches out
basic = runExecline "run-execline-test-basic" {
derivationArgs = {
preferLocalBuild = true;
allowSubstitutes = false;
};
} [
"importas" "-ui" "out" "out"
"${bin.s6-touch}" "$out"
];
# whether the stdin argument works as intended
stdin = fileHasLine "foo" (runExecline "run-execline-test-stdin" {
stdin = "foo\nbar\nfoo";
derivationArgs = {
preferLocalBuild = true;
allowSubstitutes = false;
};
} [
"importas" "-ui" "out" "out"
# this pipes stdout of s6-cat to $out
# and s6-cat redirects from stdin to stdout
"redirfd" "-w" "1" "$out" bin.s6-cat
]);
wrapWithVar = runExecline "run-execline-test-wrap-with-var" {
builderWrapper = writeScript "var-wrapper" ''
#!${bin.execlineb} -S0
export myvar myvalue $@
'';
derivationArgs = {
preferLocalBuild = true;
allowSubstitutes = false;
};
} [
"importas" "-ui" "v" "myvar"
"if" [ bin.eltest "myvalue" "=" "$v" ]
"importas" "out" "out"
bin.s6-touch "$out"
];
in [ basic stdin wrapWithVar ]
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