Change:
<del> # This file was generated by go2nix. [ { goPackagePath = "github.com/Sirupsen/logrus"; fetch = { type = "git"; url = "https://github.com/Sirupsen/logrus"; rev = "a437dfd2463eaedbec3dfe443e477d3b0a810b3f"; sha256 = "1904s2bbc7p88anzjp6fyj3jrbm5p6wbb8j4490674dq10kkcfbj"; }; } { goPackagePath = "github.com/beorn7/perks"; fetch = { type = "git"; url = "https://github.com/beorn7/perks"; rev = "4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9"; sha256 = "1hrybsql68xw57brzj805xx2mghydpdiysv3gbhr7f5wlxj2514y"; }; } { goPackagePath = "github.com/golang/protobuf"; fetch = { type = "git"; url = "https://github.com/golang/protobuf"; rev = "8ee79997227bf9b34611aee7946ae64735e6fd93"; sha256 = "0qm1lpdhf97k2hxgivq2cpjgawhlmmz39y230kgxijhm96xijxb8"; }; } { goPackagePath = "github.com/kawamuray/jsonpath"; fetch = { type = "git"; url = "https://github.com/kawamuray/jsonpath"; rev = "5c448ebf973557834ef870e788b0b2d95ac68d12"; sha256 = "1i1id1i85rf09rldp03h0ibyi6zg0fz9p9l5qj7i8dfs6h6y8f0a"; }; } { goPackagePath = "github.com/kawamuray/prometheus-exporter-harness"; fetch = { type = "git"; url = "https://github.com/kawamuray/prometheus-exporter-harness"; rev = "97eeea7b8b0619ea2a065d75c0f0f5909327afa6"; sha256 = "12al8irf8jb6p2xmm4wbh0wjqsyrdywynr4w122wxxnsx2n56xyv"; }; } { goPackagePath = "github.com/matttproud/golang_protobuf_extensions"; fetch = { type = "git"; url = "https://github.com/matttproud/golang_protobuf_extensions"; rev = "c12348ce28de40eed0136aa2b644d0ee0650e56c"; sha256 = "1d0c1isd2lk9pnfq2nk0aih356j30k3h1gi2w0ixsivi5csl7jya"; }; } { goPackagePath = "github.com/prometheus/client_golang"; fetch = { type = "git"; url = "https://github.com/prometheus/client_golang"; rev = "575f371f7862609249a1be4c9145f429fe065e32"; sha256 = "0hyvszjv5m6i40k2fn21c3bjr8jhlfdqavk1r6g2v5dybyj47vps"; }; } { goPackagePath = "github.com/prometheus/client_model"; fetch = { type = "git"; url = "https://github.com/prometheus/client_model"; rev = "fa8ad6fec33561be4280a8f0514318c79d7f6cb6"; sha256 = "11a7v1fjzhhwsl128znjcf5v7v6129xjgkdpym2lial4lac1dhm9"; }; } { goPackagePath = "github.com/prometheus/common"; fetch = { type = "git"; url = "https://github.com/prometheus/common"; rev = "0d5de9d6d8629cb8bee6d4674da4127cd8b615a3"; sha256 = "1zlvvgw67p66fz9nswkydq15j4a5z5kkiskl0jxps8i27ya1baq0"; }; } { goPackagePath = "github.com/prometheus/procfs"; fetch = { type = "git"; url = "https://github.com/prometheus/procfs"; rev = "abf152e5f3e97f2fafac028d2cc06c1feb87ffa5"; sha256 = "0cp8lznv1b4zhi3wnbjkfxwzhkqd3wbmiy6mwgjanip8l9l3ykws"; }; } { goPackagePath = "github.com/urfave/cli"; fetch = { type = "git"; url = "https://github.com/urfave/cli"; rev = "0bdeddeeb0f650497d603c4ad7b20cfe685682f6"; sha256 = "1ny63c7bfwfrsp7vfkvb4i0xhq4v7yxqnwxa52y4xlfxs4r6v6fg"; }; } { goPackagePath = "gopkg.in/yaml.v2"; fetch = { type = "git"; url = "https://gopkg.in/yaml.v2"; rev = "a5b47d31c556af34a302ce5d659e6fea44d90de0"; sha256 = "0v6l48fshdjrqzyq1kwn22gy7vy434xdr1i0lm3prsf6jbln9fam"; }; } ] </del>

Discussion:
current version: unstable-2017-10-06 desired version: 0.2.0 maintainers:
An option in the service definition to overwrite the package would be nice, too! :smile:
Why is this needed? -options are usually implemented if modifying the package in question with an overlay is a bad idea because it would mean that a lot of leaf-packages would require a rebuild as well. An example for that would be .
Ah, okay.
could you please update this package?
Oh sure, thank you for the ping :)