Just...try this

bebot.nix

@@ -1,4 +1,5 @@
-{ lib, stdenv, bash, clojure, gitignoreSource, callPackage, ... }:
+{ lib, stdenv, clojure, gitignoreSource, callPackage, writeText
+, writeShellScript, ... }:
 
 let
   base-name = "bebot";
@@ -7,14 +8,25 @@ let
   jar-name = "${base-name}.jar";
 
   cljdeps = callPackage ./deps.nix { };
-  classpath = cljdeps.makeClasspaths { };
+
+  uberdeps-edn =
+    writeText "deps.edn" ''{:deps {uberdeps/uberdeps {:mvn/version "1.1.4"}}}'';
+  uberdeps-script = writeShellScript "bebot-uberdeps.sh" ''
+    SRC=$1
+    TARGET=$2
+    clojure -M -m uberdeps.uberjar --deps-file $SRC/deps.edn --target $TARGET
+  '';
 
 in stdenv.mkDerivation {
   name = full-name;
   src = gitignoreSource ./.;
-  buildInputs = [ bash clojure ] ++ map (d: d.paths) cljdeps.packages;
+  outputs = [ "lib" ];
+  buildInputs = [ clojure ] ++ map (d: d.paths) cljdeps.packages;
   buildPhase = ''
-    ./uberdeps/package.sh ./target/${jar-name}
+    mkdir $TEMP/build
+    cd $TEMP/build
+    cp ${uberdeps-edn} .
+    ${uberdeps-script} $src ./${jar-name}
   '';
   installPhase = ''
     cp ./target/${jar-name} $out

build.clj

@@ -0,0 +1,44 @@
+(ns build
+  (:require [clojure.tools.build.api :as b]))
+
+(def target-dir "./target")
+(def class-dir (format "%s/classes" target-dir))
+(def lib-name 'org.fudo/bebop.client)
+(def version (format "0.%s" (b/git-count-revs nil)))
+(def basis (b/create-basis {:project "deps.edn"}))
+(def jar-file (format "%s/%s-%s.jar"
+                      target-dir (name lib-name) version))
+(def uber-file (format "%s/%s-%s-standalone.jar"
+                       target-dir (name lib-name) version))
+
+(defn clean [_]
+  (println (format "removing build target folder \"%s\"" target-dir))
+  (b/delete {:path target-dir}))
+
+(defn jar [_]
+  (clean nil)
+  (b/copy-dir {:src-dirs   ["src"]
+               :target-dir target-dir})
+  (b/compile-clj {:basis     basis
+                  :src-dirs  ["src"]
+                  :class-dir class-dir})
+  (b/write-pom {:class-dir class-dir
+                :lib       lib-name
+                :version   version
+                :basis     basis
+                :src-dirs  ["src"]})
+  (b/jar {:class-dir class-dir
+          :jar-file  jar-file})
+  (println (format "jar file created at: %s" jar-file)))
+
+(defn uberjar [_]
+  (clean nil)
+  (b/copy-dir {:src-dirs   ["src"]
+               :target-dir class-dir})
+  (b/compile-clj {:basis     basis
+                  :src-dirs  ["src"]
+                  :class-dir class-dir})
+  (b/uber {:class-dir class-dir
+           :uber-file uber-file
+           :basis     basis})
+  (println (format "uberjar file created at: %s" uber-file)))

deps.edn

@@ -1,14 +1,13 @@
 {
  :paths ["src"]
  :deps {
-        org.clojure/clojure    { :mvn/version "1.10.3" }
+        org.clojure/clojure    { :mvn/version "1.11.1" }
         org.clojure/core.async { :mvn/version "1.5.648" }
-        org.clojure/core.match { :mvn/version "1.0.0" }
-        org.clojure/test.check { :mvn/version "1.1.1" }
 
         net.bis5.mattermost4j/mattermost4j-core { :mvn/version "0.24.0" }
 
         org.fudo/fudo-clojure {
+                               ;; :local/root "/nix/store/afrgn7xsiglgfghnfqbba22yq3hc41a6-fudo-clojure-0.1-standalone.jar"
                                :git/url "https://git.fudo.org/fudo-public/fudo-clojure.git"
                                :sha "2d9303f55f7eac9c2f8989e9a0dde3dc97811220"
                                }
@@ -26,10 +25,5 @@
                   :main-opts ["-m" "cognitect.test-runner"]
                   :exec-fn cognitect.test-runner.api/test
                   }
-           :uberdeps {
-                      :replace-deps {uberdeps/uberdeps {:mvn/version "1.1.4"}}
-                      :replace-paths []
-                      :main-opts ["-m" "uberdeps.uberjar"]
-                      }
            }
  }

deps.nix

@@ -34,8 +34,8 @@ let repos = [
       inherit repos;
       artifactId = "clojure";
       groupId = "org.clojure";
-      sha512 = "4bb567b9262d998f554f44e677a8628b96e919bc8bcfb28ab2e80d9810f8adf8f13a8898142425d92f3515e58c57b16782cff12ba1b5ffb38b7d0ccd13d99bbc";
+      sha512 = "1925300a0fe4cc9fc3985910bb04ae65a19ce274dacc5ec76e708cfa87a7952a0a77282b083d0aebb2206afff619af73a57f0d661a3423601586f0829cc7956b";
-      version = "1.10.3";
+      version = "1.11.1";
       
     };
     paths = [ src ];
@@ -99,8 +99,8 @@ let repos = [
       inherit repos;
       artifactId = "core.specs.alpha";
       groupId = "org.clojure";
-      sha512 = "c1d2a740963896d97cd6b9a8c3dcdcc84459ea66b44170c05b8923e5fbb731b4b292b217ed3447bbc9e744c9a496552f77a6c38aea232e5e69f8faa627dea4b5";
+      sha512 = "f521f95b362a47bb35f7c85528c34537f905fb3dd24f2284201e445635a0df701b35d8419d53c6507cc78d3717c1f83cda35ea4c82abd8943cd2ab3de3fcad70";
-      version = "0.2.56";
+      version = "0.2.62";
       
     };
     paths = [ src ];
@@ -138,8 +138,8 @@ let repos = [
       inherit repos;
       artifactId = "spec.alpha";
       groupId = "org.clojure";
-      sha512 = "0740dc3a755530f52e32d27139a9ebfd7cbdb8d4351c820de8d510fe2d52a98acd6e4dfc004566ede3d426e52ec98accdca1156965218f269e60dd1cd4242a73";
+      sha512 = "ddfe4fa84622abd8ac56e2aa565a56e6bdc0bf330f377ff3e269ddc241bb9dbcac332c13502dfd4c09c2c08fe24d8d2e8cf3d04a1bc819ca5657b4e41feaa7c2";
-      version = "0.2.194";
+      version = "0.3.218";
       
     };
     paths = [ src ];
@@ -392,19 +392,6 @@ let repos = [
     paths = [ src ];
   }
 
-  rec {
-    name = "test.check/org.clojure";
-    src = fetchMavenArtifact {
-      inherit repos;
-      artifactId = "test.check";
-      groupId = "org.clojure";
-      sha512 = "b8d7a330b0b5514cd6a00c4382052fab51c3c9d3bc53133f8506791fa670e7c5ecd65094977ea5ced91f59623b0abd1ab8feeec96d63c5c6e459b265a655c577";
-      version = "1.1.1";
-      
-    };
-    paths = [ src ];
-  }
-
   rec {
     name = "jersey-media-json-jackson/org.glassfish.jersey.media";
     src = fetchMavenArtifact {

flake.lock

@@ -0,0 +1,130 @@
+{
+  "nodes": {
+    "clj2nix": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      },
+      "locked": {
+        "lastModified": 1637900288,
+        "narHash": "sha256-hQdSCIm1WpG5uK9hoe/iagyYc3Fhi8PJzfo1jFBa53g=",
+        "owner": "hlolli",
+        "repo": "clj2nix",
+        "rev": "3d0a38c954c8e0926f57de1d80d357df05fc2f94",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hlolli",
+        "repo": "clj2nix",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1627913399,
+        "narHash": "sha256-hY8g6H2KFL8ownSiFeMOjwPC8P0ueXpCVEbxgda3pko=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "12c64ca55c1014cdc1b16ed5a804aa8576601ff2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1646480205,
+        "narHash": "sha256-kekOlTlu45vuK2L9nq8iVN17V3sB0WWPqTTW3a2SQG0=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "bff2832ec341cf30acb3a4d3e2e7f1f7b590116a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1637881340,
+        "narHash": "sha256-/meU5CTm8GnaETZrJa0UqBQvk9T/jKp1+MLIQQ7FTTo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d460f48ddb884f7270b7f7bfcbf8a7b91140caa5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1645296114,
+        "narHash": "sha256-y53N7TyIkXsjMpOG7RhvqJFGDacLs9HlyHeSTBioqYU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "530a53dcbc9437363471167a5e4762c5fcfa34a1",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.05",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "clj2nix": "clj2nix",
+        "gitignore": "gitignore",
+        "nixpkgs": "nixpkgs_2",
+        "utils": "utils_2"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "utils_2": {
+      "locked": {
+        "lastModified": 1652776076,
+        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -2,7 +2,7 @@
   description = "BeBot Mattermost chatbot Clojure library.";
 
   inputs = {
-    nixpkgs.url = "nixpkgs/nixpkgs-21.05";
+    nixpkgs.url = "nixpkgs/nixos-21.05";
     utils.url = "github:numtide/flake-utils";
     clj2nix.url = "github:hlolli/clj2nix";
     gitignore = {

src/bebot/model.clj

@@ -6,8 +6,6 @@
                                       PostList
                                       User)))
 
-(defn- pthru [o] (clojure.pprint/pprint o) o)
-
 (defn- to-instant [millis]
   (java.time.Instant/ofEpochMilli millis))