flakes

gistfile1.sh

flakeA=/tmp/flakeA
flakeB=/tmp/flakeB
flakeC=/tmp/flakeC
flakeD=/tmp/flakeD
flakeD2=/tmp/flakeD2
mkdir -p $flakeA $flakeB $flakeC $flakeD $flakeD2

cat > $flakeA/flake.nix <<EOF
{
  inputs.b.url = git+file://$flakeB;
  outputs = { self, b }: {
    foo = 1 + b.foo;
  };
}
EOF

cat > $flakeB/flake.nix <<EOF
{
  inputs.c.url = git+file://$flakeC;
  inputs.c.inputs.d.url = git+file://$flakeD2;
  outputs = { self, c }: {
    foo = 1 + c.foo;
  };
}
EOF

cat > $flakeC/flake.nix <<EOF
{
  inputs.d.url = git+file://$flakeD;
  outputs = { self, d }: {
    foo = 1 + d.foo;
  };
}
EOF

cat > $flakeD/flake.nix <<EOF
{
  outputs = { self }: {
    foo = 1;
  };
}
EOF

cat > $flakeD2/flake.nix <<EOF
{
  outputs = { self }: {
    foo = 2;
  };
}
EOF

$NIX --experimental-features "flakes nix-command" eval $flakeA#foo
# would expect foo is 5 but is 4 currently on master