build: follow up to #5449. implementing suggestions and deduplication (#5464)

## Additional Information

* Based on suggestions by @knst made
[here](https://github.com/dashpay/dash/pull/5449#issuecomment-1609937147)
and
[here](https://github.com/dashpay/dash/pull/5426#discussion_r1241789033)

.github/workflows/guix-build.yml

@@ -51,11 +51,11 @@ jobs:
         run: |
           docker run --privileged -d --rm -t \
             --name guix-daemon \
-            -e ADDITIONAL_GUIX_COMMON_FLAGS='--max-jobs=32' \
+            -e ADDITIONAL_GUIX_COMMON_FLAGS="--max-jobs=$(nproc --all)" \
             -v ${{ github.workspace }}:/src/dash \
             -w /src/dash \
             guix_ubuntu:latest && \
-          docker exec guix-daemon bash -c "/usr/local/bin/guix-start"
+          docker exec guix-daemon bash -c '/usr/local/bin/guix-start'
 
       - name: Ensure build passes
         run: |
@@ -63,14 +63,7 @@ jobs:
             echo "Guix build failed!"
             exit 1
           fi
-      - name: Compute SHA256 checksums for binaries
+
+      - name: Compute SHA256 checksums
         run: |
-          ( \
+          ./contrib/containers/guix/scripts/guix-check ${{ github.workspace }}
-          SRC_PATH_PREFIX=guix-build-$(git rev-parse --short=12 HEAD)/distsrc- && \
-          sha256sum ${SRC_PATH_PREFIX}*/src/dash{d,-cli,-tx,-wallet}{,.exe} && \
-          sha256sum ${SRC_PATH_PREFIX}*/src/qt/dash-qt{,.exe} && \
-          sha256sum ${SRC_PATH_PREFIX}*/src/test/test_dash{,.exe} \
-          ) | sort -k 2
-      - name: Compute SHA256 checksums for archives
-        run: |
-          find guix-build-"$(git rev-parse --short=12 HEAD)"/output -type f | grep -v SHA256 | xargs sha256sum | sort -k 2

contrib/containers/guix/scripts/guix-check

@@ -2,16 +2,27 @@
 
 set -eo pipefail
 
-cd /src/dash
+if [[ -n "${1}" ]]; then
-COMMIT_ID=$(git rev-parse --short=12 HEAD)
+    WORKSPACE_PATH="$1"
+else
+    WORKSPACE_PATH="/src/dash"
+fi
 
-printf "Binaries:\n"
+if [[ ! -d "$WORKSPACE_PATH" ]]; then
+    echo "$0: $WORKSPACE_PATH is not a valid directory, exiting!"
+    exit 1
+fi
+
+cd "$WORKSPACE_PATH"
+COMMIT_ID="$(git rev-parse --short=12 HEAD)"
+
+printf "\nBinaries:\n\n"
 ( \
-SRC_PATH_PREFIX=guix-build-${COMMIT_ID}/distsrc- && \
+SRC_PATH_PREFIX="guix-build-${COMMIT_ID}/distsrc-" && \
 sha256sum ${SRC_PATH_PREFIX}*/src/dash{d,-cli,-tx,-wallet}{,.exe} && \
 sha256sum ${SRC_PATH_PREFIX}*/src/qt/dash-qt{,.exe} && \
 sha256sum ${SRC_PATH_PREFIX}*/src/test/test_dash{,.exe} \
 ) | sort -k 2
 
-printf "Archives:\n"
+printf "\nArchives:\n\n"
-find guix-build-"${COMMIT_ID}"/output -type f | grep -v SHA256 | xargs sha256sum | sort -k 2
+find "guix-build-${COMMIT_ID}/output" -type f | grep -v SHA256 | xargs sha256sum | sort -k 2

contrib/containers/guix/scripts/guix-start

@@ -2,19 +2,30 @@
 
 set -eo pipefail
 
+if [[ -n "${1}" ]]; then
+    WORKSPACE_PATH="$1"
+else
+    WORKSPACE_PATH="/src/dash"
+fi
+
+if [[ ! -d "$WORKSPACE_PATH" ]]; then
+    echo "$0: $WORKSPACE_PATH is not a valid directory, exiting!"
+    exit 1
+fi
+
 XCODE_VERSION="12.1"
 XCODE_RELEASE="12A7403"
 XCODE_ARCHIVE="Xcode-${XCODE_VERSION}-${XCODE_RELEASE}-extracted-SDK-with-libcxx-headers"
 
 # Check if macOS SDK is present, if not, download it
-if [ ! -d "/src/dash/depends/SDKs/${XCODE_ARCHIVE}" ]
+if [ ! -d "${WORKSPACE_PATH}/depends/SDKs/${XCODE_ARCHIVE}" ]
 then
-    mkdir -p /src/dash/depends/SDKs
+    mkdir -p "${WORKSPACE_PATH}/depends/SDKs"
-    curl -L https://bitcoincore.org/depends-sources/sdks/${XCODE_ARCHIVE}.tar.gz | tar -xz -C /src/dash/depends/SDKs
+    curl -L https://bitcoincore.org/depends-sources/sdks/${XCODE_ARCHIVE}.tar.gz | tar -xz -C "${WORKSPACE_PATH}/depends/SDKs"
 fi
 
-cd /src/dash
+cd "${WORKSPACE_PATH}"
+git config --global --add safe.directory "${WORKSPACE_PATH}"
 git status >> /dev/null
-git config --global --add safe.directory /src/dash
 
 ./contrib/guix/guix-build