anchor.diff:    th-abstraction = overrideCabal super.th-abstraction (drv: {
       ## Setup: Encountered missing dependencies:
       ## template-haskell >=2.5 && <2.13
  -    ## builder for ‘/nix/store/la3zdphp3nqzl590n25zyrgj62ga8cl6-th-abstraction-0.2.6.0.drv’ failed with exit code 1
  -    ## error: build of ‘/nix/store/la3zdphp3nqzl590n25zyrgj62ga8cl6-th-abstraction-0.2.6.0.drv’ failed
       jailbreak       = true;
     });
   
     these = overrideCabal super.these (drv: {
       ## Setup: Encountered missing dependencies:
       ## base >=4.5 && <4.11
  -    ## builder for ‘/nix/store/1wwqq67pinjj95fgqg13bchh0kbyrb83-these-0.7.4.drv’ failed with exit code 1
  -    ## error: build of ‘/nix/store/1wwqq67pinjj95fgqg13bchh0kbyrb83-these-0.7.4.drv’ failed
       jailbreak       = true;
     });
   
     trifecta = overrideCabal super.trifecta (drv: {
  -    ## CABAL-MISSING-DEPS
       ## Setup: Encountered missing dependencies:
       ## ghc >=7.0 && <8.4
  -    ## builder for ‘/nix/store/yklyv4lw4d02316p31x7a2pni1z6gjgk-doctest-0.13.0.drv’ failed with exit code 1
  -    ## error: build of ‘/nix/store/yklyv4lw4d02316p31x7a2pni1z6gjgk-doctest-0.13.0.drv’ failed
  +    ## /run/current-system/sw/bin/nix-shell: failed to build all dependencies
       doCheck         = false;
     });
   
     unliftio-core = overrideCabal super.unliftio-core (drv: {
       ## Setup: Encountered missing dependencies:
       ## base >=4.5 && <4.11
  -    ## builder for ‘/nix/store/bn8w06wlq7zzli0858hfwlai7wbj6dmq-unliftio-core-0.1.1.0.drv’ failed with exit code 1
  -    ## error: build of ‘/nix/store/bn8w06wlq7zzli0858hfwlai7wbj6dmq-unliftio-core-0.1.1.0.drv’ failed
       jailbreak       = true;
     });
   
  
positive.code:   lambdacube-ir = overrideCabal super.lambdacube-ir (drv: {
      ## Upstreamed, awaiting a Hackage release
      ## 
      ## /nix/store/78sxg2kvl2klplqfx22s6b42lds7qq23-stdenv/setup: line 99: cd: lambdacube-ir.haskell: No such file or directory
      src = pkgs.fetchFromGitHub {
        owner  = "lambdacube3d";
        repo   = "lambdacube-ir";
        rev    = "b86318b510ef59606c5b7c882cad33af52ce257c";
        sha256 = "0j4r6b32lcm6jg653xzg9ijxkfjahlb4x026mv5dhs18kvgqhr8x";
      };
      ## Setup: No cabal file found.
      prePatch        = "cd lambdacube-ir.haskell; ";
    });
  
    lens = overrideCabal super.lens (drv: {
      ## Upstreamed, awaiting a Hackage release
      ## 
      ##     • Could not deduce (Apply f)
      ##         arising from the superclasses of an instance declaration
      ##       from the context: (Contravariant f, Applicative f)
      src = pkgs.fetchFromGitHub {
        owner  = "ekmett";
        repo   = "lens";
        rev    = "4ad49eaf2448d856f0433fe5a4232f1e8fa87eb0";
        sha256 = "0sd08v6syadplhk5d21yi7qffbjncn8z1bqlwz9nyyb0xja8s8wa";
      };
      ## CABAL-MISSING-DEPS
      ## Setup: Encountered missing dependencies:
      ## ghc >=7.0 && <8.4
      ## builder for ‘/nix/store/yklyv4lw4d02316p31x7a2pni1z6gjgk-doctest-0.13.0.drv’ failed with exit code 1
      ## error: build of ‘/nix/store/yklyv4lw4d02316p31x7a2pni1z6gjgk-doctest-0.13.0.drv’ failed
      doCheck         = false;
      ## Setup: Encountered missing dependencies:
      ## template-haskell >=2.4 && <2.13
      ## builder for ‘/nix/store/fvrc4s96ym33i74y794nap7xai9p69fa-lens-4.15.4.drv’ failed with exit code 1
      ## error: build of ‘/nix/store/fvrc4s96ym33i74y794nap7xai9p69fa-lens-4.15.4.drv’ failed
      jailbreak       = true;
    });
  
    simple-reflect = overrideCabal super.simple-reflect (drv: {
  
negative.code:   wavefront = overrideCabal super.wavefront (drv: {
      ## Setup: Encountered missing dependencies:
      ## base >=4.8 && <4.11
      jailbreak       = true;
    });
  }
  