I have managed to get SwayFX 0.4 working nicely. This required adding a new package.

I look forward to contributing upstream, but need some handholding in how to do that.

Here some code, showing how i managed:

```

(define-public scenefx
  (package
   (name "scenefx")
   (version "0.1")
   (source (origin
            (method git-fetch)
            (uri (git-reference
                  (url "https://github.com/wlrfx/scenefx.git")
                  (commit version)))
            (file-name (git-file-name name version))
            (sha256
             (base32
              "1r7f8bprsn0mwlkmc8d14nr3iibljfyxypb4i06v66ghlngaw6dw"))))
   (build-system meson-build-system)
   (inputs (map (lambda (x) (specification->package x))
                `("basu"
                  "cairo"
                  "gdk-pixbuf"
                  "json-c"
                  "cmake"
                  "pango"
                  "libevdev"
                  "libinput-minimal"
                  "libxkbcommon"
                  "pango"
                  "pcre2"
                  "pkg-config"
                  "pcre2"
                  "wayland"
                  "wayland-protocols"
                  "wlr-protocols"
                  "libdrm"
                  "wlroots@0.17.4")))
   (home-page "https://github.com/wlrfx/scenefx.git")
   (synopsis "SceneFX")
   (description
    "SceneFX")
   (license license:expat)))

(define-public sss-swayfx
  (package
   (inherit sway)
   (name "swayfx")
   (version "0.4")
   (source (origin
            (method git-fetch)
            (uri (git-reference
                  (url "https://github.com/WillPower3309/swayfx")
                  (commit version)))
            (file-name (git-file-name name version))
            (sha256
             (base32
              "0651gbkszc8wwkiiw983m3815cfyk4c9v4mpd1nqf27a0f6qjgsm"))))
   (build-system meson-build-system)
   (inputs (append
            (map (lambda(x) (specification->package x))
                 `("basu"
                   "cairo"
                   "gdk-pixbuf"
                   "json-c"
                   "cmake"
                   "pango"
                   "libevdev"
                   "libinput-minimal"
                   "libxkbcommon"
                   "pcre2"
                   "pkg-config"
                   "swaybg"
                   "wayland"
                   "wayland-protocols"
                   "wlr-protocols"
                   "libdrm"
                   "wlroots@0.17.4"
                   ))
            (list scenefx pango)
            ))
   (home-page "https://github.com/WillPower3309/swayfx")
   (synopsis "Sway Fork with extra options and effects")
   (description
    "Fork of Sway, a Wayland compositor compatible with i3.  SwayFX
adds extra options and effects to the original Sway, such as blur, rounded
corners, shadows, inactive window dimming, etc.")
   (license license:expat)))

```