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with import ./config.nix;
let mkCADerivation = args: mkDerivation ({
__contentAddressed = true;
outputHashMode = "recursive";
outputHashAlgo = "sha256";
} // args);
in
{ seed ? 0 }:
# A simple content-addressed derivation.
# The derivation can be arbitrarily modified by passing a different `seed`,
# but the output will always be the same
rec {
rootLegacy = mkDerivation {
name = "simple-input-addressed";
buildCommand = ''
set -x
echo "Building a legacy derivation"
mkdir -p $out
echo "Hello World" > $out/hello
'';
};
rootCA = mkCADerivation {
name = "rootCA";
outputs = [ "out" "dev" "foo" ];
buildCommand = ''
echo "building a CA derivation"
echo "The seed is ${toString seed}"
mkdir -p $out
echo ${rootLegacy}/hello > $out/dep
ln -s $out $out/self
# test symlinks at root
ln -s $out $dev
ln -s $out $foo
'';
};
dependentCA = mkCADerivation {
name = "dependent";
buildCommand = ''
echo "building a dependent derivation"
mkdir -p $out
cat ${rootCA}/self/dep
echo ${rootCA}/self/dep > $out/dep
'';
};
transitivelyDependentCA = mkCADerivation {
name = "transitively-dependent";
buildCommand = ''
echo "building transitively-dependent"
cat ${dependentCA}/dep
echo ${dependentCA} > $out
'';
};
dependentNonCA = mkDerivation {
name = "dependent-non-ca";
buildCommand = ''
echo "Didn't cut-off"
echo "building dependent-non-ca"
mkdir -p $out
echo ${rootCA}/non-ca-hello > $out/dep
'';
};
dependentForBuildCA = mkCADerivation {
name = "dependent-for-build-ca";
buildCommand = ''
echo "Depends on rootCA for building only"
mkdir -p $out
echo ${rootCA}
touch $out
'';
};
dependentForBuildNonCA = mkDerivation {
name = "dependent-for-build-non-ca";
buildCommand = ''
echo "Depends on rootCA for building only"
mkdir -p $out
echo ${rootCA}
touch $out
'';
};
dependentFixedOutput = mkDerivation {
name = "dependent-fixed-output";
outputHashMode = "recursive";
outputHash = "sha512-7aJcmSuEuYP5tGKcmGY8bRr/lrCjJlOxP2mIUjO/vMQeg6gx/65IbzRWES8EKiPDOs9z+wF30lEfcwxM/cT4pw==";
buildCommand = ''
cat ${dependentCA}/dep
echo foo > $out
'';
};
runnable = mkCADerivation rec {
name = "runnable-thing";
buildCommand = ''
mkdir -p $out/bin
echo ${rootCA} # Just to make it depend on it
echo "#! ${shell}" > $out/bin/${name}
chmod +x $out/bin/${name}
'';
};
}
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