diff --git a/tests/basic/main.fmf b/tests/basic/main.fmf
index e75cd73..0ee8755 100644
--- a/tests/basic/main.fmf
+++ b/tests/basic/main.fmf
@@ -1,5 +1,15 @@
 summary: Test lld with clang
-test: ./test.sh
-require:
-  - lld
-  - clang
+test: "$WITH_SCL ./test.sh"
+require: []
+adjust:
+  # Common requirements when LLVM is not SCL-ized
+  - require+:
+      - clang
+      - lld
+    when: "collection is not defined"
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-clang
+      - llvm-toolset-13.0-lld
+    when: "collection == llvm-toolset-13.0"
diff --git a/tests/build-gating-alternatives.fmf b/tests/build-gating-alternatives.fmf
index aff18ea..cb62300 100644
--- a/tests/build-gating-alternatives.fmf
+++ b/tests/build-gating-alternatives.fmf
@@ -1,3 +1,15 @@
+#
+# Build/PR gating tests for *LLVM 13*
+#
+# Compatible with various LLVM 13 distributions:
+#
+#   * Fedora (ursine packages)
+#   * Centos 9 stream (ursine packages)
+#   * RHEL-9 (ursine packages)
+#   * RHEL-8 (Red Hat module)
+#   * RHEL-7 (software collection)
+#
+
 summary: LLD tests for build/PR gating, testing alternatives and spoiling the installation
 adjust:
   - because: "Plan to be ran when either executed locally, or executed by CI system to gate a build or PR."
@@ -6,16 +18,18 @@ adjust:
       and trigger != commit
       and trigger != build
     enabled: false
+
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-13.0"
+    when: "collection == llvm-toolset-13.0"
+
 discover:
     - name: lld-tests
       how: fmf
       test: ld-alternative
 execute:
     how: tmt
-prepare:
-    - name: packages
-      how: install
-      package: lld
 provision:
   hardware:
     memory: ">= 4 GiB"
diff --git a/tests/build-gating.fmf b/tests/build-gating.fmf
index dfc0ea7..583ed6f 100644
--- a/tests/build-gating.fmf
+++ b/tests/build-gating.fmf
@@ -1,3 +1,15 @@
+#
+# Build/PR gating tests for *LLVM 13*
+#
+# Compatible with various LLVM 13 distributions:
+#
+#   * Fedora (ursine packages)
+#   * Centos 9 stream (ursine packages)
+#   * RHEL-9 (ursine packages)
+#   * RHEL-8 (Red Hat module)
+#   * RHEL-7 (software collection)
+#
+
 summary: LLD tests for build/PR gating
 adjust:
   - because: "Plan to be ran when either executed locally, or executed by CI system to gate a build or PR."
@@ -6,6 +18,12 @@ adjust:
       and trigger != commit
       and trigger != build
     enabled: false
+
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-13.0"
+    when: "collection == llvm-toolset-13.0"
+
 discover:
     - name: lld-tests
       how: fmf
@@ -17,10 +35,6 @@ discover:
       test: integration-test-suite
 execute:
     how: tmt
-prepare:
-    - name: packages
-      how: install
-      package: lld
 provision:
   hardware:
     memory: ">= 4 GiB"
diff --git a/tests/gcc-compat-basic/main.fmf b/tests/gcc-compat-basic/main.fmf
index e2c19c6..2cf6e20 100644
--- a/tests/gcc-compat-basic/main.fmf
+++ b/tests/gcc-compat-basic/main.fmf
@@ -1,5 +1,14 @@
 summary: Test lld with gcc
-test: ./test.sh
+test: "$WITH_SCL ./test.sh"
 require:
-  - lld
   - gcc
+adjust:
+  # Common requirements when LLVM is not SCL-ized
+  - require+:
+      - lld
+    when: "collection is not defined"
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-lld
+    when: "collection == llvm-toolset-13.0"
diff --git a/tests/ld-alternative/main.fmf b/tests/ld-alternative/main.fmf
index af040ae..7144ea1 100644
--- a/tests/ld-alternative/main.fmf
+++ b/tests/ld-alternative/main.fmf
@@ -1,8 +1,17 @@
 summary: Test linker switching with alternatives
-test: ./test.sh
+test: "$WITH_SCL ./test.sh"
 # This test spoils the installation by removing lld, therefore it should be marked as such.
 tag:
   - spoils-installation
 require:
-  - lld
   - binutils
+adjust:
+  # Common requirements when LLVM is not SCL-ized
+  - require+:
+      - lld
+    when: "collection is not defined"
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-lld
+    when: "collection == llvm-toolset-13.0"
diff --git a/tests/lit-tests/main.fmf b/tests/lit-tests/main.fmf
index 599dee4..2614d0e 100644
--- a/tests/lit-tests/main.fmf
+++ b/tests/lit-tests/main.fmf
@@ -1,6 +1,16 @@
 summary: Run lld testsuite
-test: ./test.sh
+test: "$WITH_SCL ./test.sh"
 duration: 30m
-require:
-  - lld
-  - lld-test
+require: []
+adjust:
+  # Common requirements when LLVM is not SCL-ized
+  - require+:
+      - lld
+      - lld-test
+    when: "collection is not defined"
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-lld
+      - llvm-toolset-13.0-lld-test
+    when: "collection == llvm-toolset-13.0"