diff --git a/doc/manual/change-authors.yml b/doc/manual/change-authors.yml
index ef3c6f245..b5f0358ce 100644
--- a/doc/manual/change-authors.yml
+++ b/doc/manual/change-authors.yml
@@ -66,6 +66,10 @@ delan:
   forgejo: delan
   github: delan
 
+detroyejr:
+  display_name: Jonathan De Troye
+  github: detroyejr
+
 edolstra:
   display_name: Eelco Dolstra
   github: edolstra
@@ -102,6 +106,11 @@ jade:
 just1602:
   forgejo: just1602
 
+kfears:
+  display_name: KFears
+  forgejo: kfearsoff
+  github: kfearsoff
+
 kiara:
   github: KiaraGrouwstra
 
diff --git a/doc/manual/rl-next/repl-flake.md b/doc/manual/rl-next/repl-flake.md
new file mode 100644
index 000000000..3a13e961f
--- /dev/null
+++ b/doc/manual/rl-next/repl-flake.md
@@ -0,0 +1,10 @@
+---
+synopsis: Remove experimental repl-flake
+issues: [gh#10103, fj#557]
+cls: [2147]
+prs: [gh#10299]
+category: Breaking Changes
+credits: [detroyejr, kfears]
+---
+
+The `repl-flake` experimental feature flag has been removed, its functionality is now the default when `flakes` experimental feature is active. The `nix repl` command now works like the rest of the new CLI in that `nix repl {path}` now tries to load a flake at `{path}` (or fails if the `flakes` experimental feature isn't enabled).
diff --git a/lix/libutil/experimental-features/repl-flake.md b/lix/libutil/experimental-features/repl-flake.md
deleted file mode 100644
index 76d910bbf..000000000
--- a/lix/libutil/experimental-features/repl-flake.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-name: repl-flake
-internalName: ReplFlake
----
-Allow passing [installables](@docroot@/command-ref/new-cli/nix.md#installables) to `nix repl`, making its interface consistent with the other experimental commands.
diff --git a/lix/libutil/meson.build b/lix/libutil/meson.build
index eb07425e1..fd6135029 100644
--- a/lix/libutil/meson.build
+++ b/lix/libutil/meson.build
@@ -153,7 +153,6 @@ experimental_feature_definitions = files(
   'experimental-features/read-only-local-store.md',
   'experimental-features/recursive-nix.md',
   'experimental-features/repl-automation.md',
-  'experimental-features/repl-flake.md',
 )
 
 deprecated_feature_definitions = files(
diff --git a/lix/nix/repl.cc b/lix/nix/repl.cc
index 466ffea6a..39287a7e5 100644
--- a/lix/nix/repl.cc
+++ b/lix/nix/repl.cc
@@ -47,15 +47,6 @@ struct CmdRepl : RawInstallablesCommand
 
     void applyDefaultInstallables(std::vector<std::string> & rawInstallables) override
     {
-        if (!experimentalFeatureSettings.isEnabled(Xp::ReplFlake) && !(file) && rawInstallables.size() >= 1) {
-            warn("future versions of Lix will require using `--file` to load a file");
-            if (rawInstallables.size() > 1)
-                warn("more than one input file is not currently supported");
-            auto filePath = rawInstallables[0].data();
-            file = std::optional(filePath);
-            rawInstallables.front() = rawInstallables.back();
-            rawInstallables.pop_back();
-        }
         if (rawInstallables.empty() && (file.has_value() || expr.has_value())) {
             rawInstallables.push_back(".");
         }
diff --git a/lix/nix/repl.md b/lix/nix/repl.md
index f8ad49199..fdb310b9c 100644
--- a/lix/nix/repl.md
+++ b/lix/nix/repl.md
@@ -38,7 +38,7 @@ R""(
   Loading Installable ''...
   Added 1 variables.
 
-  # nix repl --extra-experimental-features 'flakes repl-flake' nixpkgs
+  # nix repl --extra-experimental-features 'flakes' nixpkgs
   Loading Installable 'flake:nixpkgs#'...
   Added 5 variables.
 
diff --git a/tests/functional/repl.sh b/tests/functional/repl.sh
index 1f2c2e93f..5868f7931 100644
--- a/tests/functional/repl.sh
+++ b/tests/functional/repl.sh
@@ -47,6 +47,12 @@ testRepl () {
       | grep "attribute 'currentSystem' missing"
     nix repl "${nixArgs[@]}" 2>&1 <<< "builtins.currentSystem" \
       | grep "$(nix-instantiate --eval -E 'builtins.currentSystem')"
+
+    local replOutput="$(nix repl "${nixArgs[@]}" ${testDir}/simple.nix 2>&1)"
+    echo "$replOutput"
+    echo "$replOutput" \
+      | grepQuiet "error: could not find a flake.nix file" \
+      || fail "nix repl simple.nix doesn't fail because simple.nix is not a flake"
 }
 
 # Simple test, try building a drv
@@ -115,7 +121,7 @@ testReplResponseNoRegex '
 testReplResponse '
 drvPath
 ' '".*-simple.drv"' \
-$testDir/simple.nix
+--file $testDir/simple.nix
 
 testReplResponse '
 drvPath
@@ -125,7 +131,7 @@ drvPath
 testReplResponse '
 drvPath
 ' '".*-simple.drv"' \
---file $testDir/simple.nix --extra-experimental-features 'repl-flake ca-derivations'
+--file $testDir/simple.nix --extra-experimental-features 'ca-derivations'
 
 mkdir -p flake && cat <<EOF > flake/flake.nix
 {
@@ -140,7 +146,7 @@ EOF
 testReplResponse '
 foo + baz
 ' "3" \
-    ./flake ./flake\#bar --experimental-features 'flakes repl-flake'
+    ./flake ./flake\#bar --experimental-features 'flakes'
 
 # Test the `:reload` mechansim with flakes:
 # - Eval `./flake#changingThing`
@@ -153,7 +159,7 @@ sleep 1 # Leave the repl the time to eval 'foo'
 sed -i 's/beforeChange/afterChange/' flake/flake.nix
 echo ":reload"
 echo "changingThing"
-) | nix repl ./flake --experimental-features 'flakes repl-flake')
+) | nix repl ./flake --experimental-features 'flakes')
 echo "$replResult" | grepQuiet -s beforeChange
 echo "$replResult" | grepQuiet -s afterChange