diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4b155535a..2892f7f24 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,6 +11,9 @@ default:
 variables:
   NIX_PATH: "nixpkgs=http://nixos.org/channels/nixos-21.05/nixexprs.tar.xz"
   AWS_SHARED_CREDENTIALS_FILE: "/etc/aws/credentials"
+  FLAKE: "git+${CI_REPOSITORY_URL}?ref=${CI_COMMIT_REF_NAME}&rev=${CI_COMMIT_SHA}"
+
+  TRANSFER_METER_FREQUENCY: "2s"
   
 stages:
   - frontend:build
@@ -23,7 +26,7 @@ stages:
 node dependencies:
   stage: frontend:build
   script:
-    - nix -L build -o result .#uniworxNodeDependencies
+    - nix -L build -o result "${FLAKE}#uniworxNodeDependencies"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > node-dependencies.nar.xz
   before_script: &nix-before
     - mkdir -p /etc/nix
@@ -54,7 +57,7 @@ well known:
   stage: frontend:build
   script:
     - xzcat node-dependencies.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworxWellKnown
+    - nix -L build -o result "${FLAKE}#uniworxWellKnown"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > well-known.nar.xz
   before_script: *nix-before
   needs:
@@ -73,7 +76,7 @@ frontend:
   script:
     - xzcat node-dependencies.nar.xz | nix-store --import
     - xzcat well-known.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworxFrontend
+    - nix -L build -o result "${FLAKE}#uniworxFrontend"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > frontend.nar.xz
   before_script: *nix-before
   needs:
@@ -93,7 +96,7 @@ uniworx:lib:uniworx:
   stage: backend:build
   script:
     - xzcat frontend.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworx:lib:uniworx
+    - nix -L build -o result "${FLAKE}#uniworx:lib:uniworx"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:lib:uniworx.nar.xz
   before_script: *nix-before
   needs:
@@ -115,7 +118,7 @@ uniworx:exe:uniworx:
   stage: backend:build
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworx:exe:uniworx
+    - nix -L build -o result "${FLAKE}#uniworx:exe:uniworx"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworx.nar.xz
   before_script: *nix-before
   needs:
@@ -139,7 +142,7 @@ uniworx:exe:uniworx-wflint:
   stage: backend:build
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworx:exe:uniworx-wflint
+    - nix -L build -o result "${FLAKE}#uniworx:exe:uniworx-wflint"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworx-wflint.nar.xz
   before_script: *nix-before
   needs:
@@ -163,7 +166,7 @@ uniworx:exe:uniworxdb:
   stage: backend:build
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworx:exe:uniworxdb
+    - nix -L build -o result "${FLAKE}#uniworx:exe:uniworxdb"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworxdb.nar.xz
   before_script: *nix-before
   needs:
@@ -187,7 +190,7 @@ uniworx:exe:uniworxload:
   stage: backend:build
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworx:exe:uniworxload
+    - nix -L build -o result "${FLAKE}#uniworx:exe:uniworxload"
     - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworxload.nar.xz
   before_script: *nix-before
   needs:
@@ -231,7 +234,7 @@ demo docker:
   script:
     - xzcat uniworx:exe:uniworx.nar.xz | nix-store --import
     - xzcat uniworx:exe:uniworxdb.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworxDemoDocker
+    - nix -L build -o result "${FLAKE}#uniworxDemoDocker"
     - cp -pr --reflink=auto -L result uniworx-demo.tar.gz
   before_script: *nix-before
   needs:
@@ -265,7 +268,7 @@ docker:
   stage: docker
   script:
     - xzcat uniworx:exe:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result .#uniworxDocker
+    - nix -L build -o result "${FLAKE}#uniworxDocker"
     - cp -pr --reflink=auto -L result uniworx.tar.gz
   before_script: *nix-before
   needs:
@@ -304,9 +307,12 @@ parse changelog:
   before_script: *nix-before
   script:
     - xzcat node-dependencies.nar.xz | nix-store --import
-    - nix -L run .#jqChangelogJson -- -r '.versions[0].version' > .current-version
-    - nix -L run .#jqChangelogJson -- -r '.versions[0].body' > .current-changelog.md
+    - nix -L run "${FLAKE}#jqChangelogJson" -- -r '.versions[0].version' > .current-version
+    - nix -L run "${FLAKE}#jqChangelogJson" -- -r '.versions[0].body' > .current-changelog.md
+    - echo "VERSION=$(cat .current-version)" >> build.env
   artifacts:
+    reports:
+      dotenv: build.env
     paths:
       - .current-version
       - .current-changelog.md
@@ -319,7 +325,7 @@ upload docker:
   stage: docker
   script:
     - xzcat uniworx:exe:uniworx.nar.xz | nix-store --import
-    - nix -L run .#pushUniworxDocker
+    - nix -L run "${FLAKE}#pushUniworxDocker"
   before_script: *nix-before
   needs:
     - job: node dependencies # transitive
@@ -343,7 +349,7 @@ upload demo docker:
   script:
     - xzcat uniworx:exe:uniworx.nar.xz | nix-store --import
     - xzcat uniworx:exe:uniworxdb.nar.xz | nix-store --import
-    - nix -L run .#pushUniworxDemoDocker
+    - nix -L run "${FLAKE}#pushUniworxDemoDocker"
   before_script: *nix-before
   needs:
     - job: node dependencies # transitive
@@ -372,8 +378,6 @@ release:
   rules:
     - if: $CI_COMMIT_REF_NAME =~ /^v[0-9].*/
       when: on_success
-  before_script:
-    - export VERSION="$(cat .current-version)"
   script:
     - release-cli create --name "${VERSION}" --tag-name $CI_COMMIT_TAG --description .current-changelog.md
   needs: