diff --git a/packages/octez-accuser-PsParisC/octez-accuser-PsParisC.21.0/opam b/packages/octez-accuser-PsParisC/octez-accuser-PsParisC.21.0/opam
index f66e19f883f..9c7008465a0 100644
--- a/packages/octez-accuser-PsParisC/octez-accuser-PsParisC.21.0/opam
+++ b/packages/octez-accuser-PsParisC/octez-accuser-PsParisC.21.0/opam
@@ -29,3 +29,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-accuser-PsQuebec/octez-accuser-PsQuebec.21.0/opam b/packages/octez-accuser-PsQuebec/octez-accuser-PsQuebec.21.0/opam
index fef5942ae0d..2bc097311e2 100644
--- a/packages/octez-accuser-PsQuebec/octez-accuser-PsQuebec.21.0/opam
+++ b/packages/octez-accuser-PsQuebec/octez-accuser-PsQuebec.21.0/opam
@@ -29,3 +29,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-alcotezt/octez-alcotezt.21.0/opam b/packages/octez-alcotezt/octez-alcotezt.21.0/opam
index 42ada2c1fe3..8907c96c05a 100644
--- a/packages/octez-alcotezt/octez-alcotezt.21.0/opam
+++ b/packages/octez-alcotezt/octez-alcotezt.21.0/opam
@@ -26,3 +26,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-baker-PsParisC/octez-baker-PsParisC.21.0/opam b/packages/octez-baker-PsParisC/octez-baker-PsParisC.21.0/opam
index 9906459adfa..26862a02a26 100644
--- a/packages/octez-baker-PsParisC/octez-baker-PsParisC.21.0/opam
+++ b/packages/octez-baker-PsParisC/octez-baker-PsParisC.21.0/opam
@@ -29,3 +29,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-baker-PsQuebec/octez-baker-PsQuebec.21.0/opam b/packages/octez-baker-PsQuebec/octez-baker-PsQuebec.21.0/opam
index b5455d70b9b..b435e7d53ef 100644
--- a/packages/octez-baker-PsQuebec/octez-baker-PsQuebec.21.0/opam
+++ b/packages/octez-baker-PsQuebec/octez-baker-PsQuebec.21.0/opam
@@ -29,3 +29,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-client/octez-client.21.0/opam b/packages/octez-client/octez-client.21.0/opam
index 31cff062dbc..8b00edacaab 100644
--- a/packages/octez-client/octez-client.21.0/opam
+++ b/packages/octez-client/octez-client.21.0/opam
@@ -78,3 +78,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-codec/octez-codec.21.0/opam b/packages/octez-codec/octez-codec.21.0/opam
index fba1c210c2d..5c885b4fc85 100644
--- a/packages/octez-codec/octez-codec.21.0/opam
+++ b/packages/octez-codec/octez-codec.21.0/opam
@@ -67,3 +67,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-crawler/octez-crawler.21.0/opam b/packages/octez-crawler/octez-crawler.21.0/opam
index 58d42f67dd9..8268012248a 100644
--- a/packages/octez-crawler/octez-crawler.21.0/opam
+++ b/packages/octez-crawler/octez-crawler.21.0/opam
@@ -27,3 +27,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-dac-client/octez-dac-client.21.0/opam b/packages/octez-dac-client/octez-dac-client.21.0/opam
index 6e87dc54b63..672cd462603 100644
--- a/packages/octez-dac-client/octez-dac-client.21.0/opam
+++ b/packages/octez-dac-client/octez-dac-client.21.0/opam
@@ -35,3 +35,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-dac-node/octez-dac-node.21.0/opam b/packages/octez-dac-node/octez-dac-node.21.0/opam
index 8ce58b99dd5..dce807f8068 100644
--- a/packages/octez-dac-node/octez-dac-node.21.0/opam
+++ b/packages/octez-dac-node/octez-dac-node.21.0/opam
@@ -38,3 +38,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-dal-node/octez-dal-node.21.0/opam b/packages/octez-dal-node/octez-dal-node.21.0/opam
index 7bcebefd9bf..418e2175be4 100644
--- a/packages/octez-dal-node/octez-dal-node.21.0/opam
+++ b/packages/octez-dal-node/octez-dal-node.21.0/opam
@@ -40,3 +40,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-distributed-internal/octez-distributed-internal.21.0/opam b/packages/octez-distributed-internal/octez-distributed-internal.21.0/opam
index fbc9966e2c5..3ef8a3a3c87 100644
--- a/packages/octez-distributed-internal/octez-distributed-internal.21.0/opam
+++ b/packages/octez-distributed-internal/octez-distributed-internal.21.0/opam
@@ -26,3 +26,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-distributed-lwt-internal/octez-distributed-lwt-internal.21.0/opam b/packages/octez-distributed-lwt-internal/octez-distributed-lwt-internal.21.0/opam
index 1d83788e564..982cc46386a 100644
--- a/packages/octez-distributed-lwt-internal/octez-distributed-lwt-internal.21.0/opam
+++ b/packages/octez-distributed-lwt-internal/octez-distributed-lwt-internal.21.0/opam
@@ -29,3 +29,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-injector/octez-injector.21.0/opam b/packages/octez-injector/octez-injector.21.0/opam
index aa716b65aaf..421e4b9c419 100644
--- a/packages/octez-injector/octez-injector.21.0/opam
+++ b/packages/octez-injector/octez-injector.21.0/opam
@@ -29,3 +29,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-internal-libs/octez-internal-libs.21.0/opam b/packages/octez-internal-libs/octez-internal-libs.21.0/opam
index 374042673fa..84f79359278 100644
--- a/packages/octez-internal-libs/octez-internal-libs.21.0/opam
+++ b/packages/octez-internal-libs/octez-internal-libs.21.0/opam
@@ -52,3 +52,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-l2-libs/octez-l2-libs.21.0/opam b/packages/octez-l2-libs/octez-l2-libs.21.0/opam
index 30bc7d0bf71..ba78cc63a6f 100644
--- a/packages/octez-l2-libs/octez-l2-libs.21.0/opam
+++ b/packages/octez-l2-libs/octez-l2-libs.21.0/opam
@@ -50,3 +50,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-libs/octez-libs.21.0/opam b/packages/octez-libs/octez-libs.21.0/opam
index c44c14669ca..849c6d6e790 100644
--- a/packages/octez-libs/octez-libs.21.0/opam
+++ b/packages/octez-libs/octez-libs.21.0/opam
@@ -121,3 +121,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-node-config/octez-node-config.21.0/opam b/packages/octez-node-config/octez-node-config.21.0/opam
index e8863319ab8..dbf1051f5b6 100644
--- a/packages/octez-node-config/octez-node-config.21.0/opam
+++ b/packages/octez-node-config/octez-node-config.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-node/octez-node.21.0/opam b/packages/octez-node/octez-node.21.0/opam
index 3f171a5259d..5a9dbdb86a2 100644
--- a/packages/octez-node/octez-node.21.0/opam
+++ b/packages/octez-node/octez-node.21.0/opam
@@ -120,3 +120,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-proto-libs/octez-proto-libs.21.0/opam b/packages/octez-proto-libs/octez-proto-libs.21.0/opam
index e6a4cc79839..674e8c12da7 100644
--- a/packages/octez-proto-libs/octez-proto-libs.21.0/opam
+++ b/packages/octez-proto-libs/octez-proto-libs.21.0/opam
@@ -36,3 +36,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-000-Ps9mPmXa-libs/octez-protocol-000-Ps9mPmXa-libs.21.0/opam b/packages/octez-protocol-000-Ps9mPmXa-libs/octez-protocol-000-Ps9mPmXa-libs.21.0/opam
index ea3b8291586..ff45016fe1d 100644
--- a/packages/octez-protocol-000-Ps9mPmXa-libs/octez-protocol-000-Ps9mPmXa-libs.21.0/opam
+++ b/packages/octez-protocol-000-Ps9mPmXa-libs/octez-protocol-000-Ps9mPmXa-libs.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-001-PtCJ7pwo-libs/octez-protocol-001-PtCJ7pwo-libs.21.0/opam b/packages/octez-protocol-001-PtCJ7pwo-libs/octez-protocol-001-PtCJ7pwo-libs.21.0/opam
index 3bd7e323ed9..eaa56ac0e4d 100644
--- a/packages/octez-protocol-001-PtCJ7pwo-libs/octez-protocol-001-PtCJ7pwo-libs.21.0/opam
+++ b/packages/octez-protocol-001-PtCJ7pwo-libs/octez-protocol-001-PtCJ7pwo-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-002-PsYLVpVv-libs/octez-protocol-002-PsYLVpVv-libs.21.0/opam b/packages/octez-protocol-002-PsYLVpVv-libs/octez-protocol-002-PsYLVpVv-libs.21.0/opam
index 0349b493b76..546bf707869 100644
--- a/packages/octez-protocol-002-PsYLVpVv-libs/octez-protocol-002-PsYLVpVv-libs.21.0/opam
+++ b/packages/octez-protocol-002-PsYLVpVv-libs/octez-protocol-002-PsYLVpVv-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-003-PsddFKi3-libs/octez-protocol-003-PsddFKi3-libs.21.0/opam b/packages/octez-protocol-003-PsddFKi3-libs/octez-protocol-003-PsddFKi3-libs.21.0/opam
index 6dc12f1e9ff..b5d623c5b8d 100644
--- a/packages/octez-protocol-003-PsddFKi3-libs/octez-protocol-003-PsddFKi3-libs.21.0/opam
+++ b/packages/octez-protocol-003-PsddFKi3-libs/octez-protocol-003-PsddFKi3-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-004-Pt24m4xi-libs/octez-protocol-004-Pt24m4xi-libs.21.0/opam b/packages/octez-protocol-004-Pt24m4xi-libs/octez-protocol-004-Pt24m4xi-libs.21.0/opam
index 25725b554fb..19736812e26 100644
--- a/packages/octez-protocol-004-Pt24m4xi-libs/octez-protocol-004-Pt24m4xi-libs.21.0/opam
+++ b/packages/octez-protocol-004-Pt24m4xi-libs/octez-protocol-004-Pt24m4xi-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-005-PsBabyM1-libs/octez-protocol-005-PsBabyM1-libs.21.0/opam b/packages/octez-protocol-005-PsBabyM1-libs/octez-protocol-005-PsBabyM1-libs.21.0/opam
index b46a1ea07ba..23ede27cced 100644
--- a/packages/octez-protocol-005-PsBabyM1-libs/octez-protocol-005-PsBabyM1-libs.21.0/opam
+++ b/packages/octez-protocol-005-PsBabyM1-libs/octez-protocol-005-PsBabyM1-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-006-PsCARTHA-libs/octez-protocol-006-PsCARTHA-libs.21.0/opam b/packages/octez-protocol-006-PsCARTHA-libs/octez-protocol-006-PsCARTHA-libs.21.0/opam
index b339809abac..59411ad0ff6 100644
--- a/packages/octez-protocol-006-PsCARTHA-libs/octez-protocol-006-PsCARTHA-libs.21.0/opam
+++ b/packages/octez-protocol-006-PsCARTHA-libs/octez-protocol-006-PsCARTHA-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-007-PsDELPH1-libs/octez-protocol-007-PsDELPH1-libs.21.0/opam b/packages/octez-protocol-007-PsDELPH1-libs/octez-protocol-007-PsDELPH1-libs.21.0/opam
index 1a09024fb8c..b68cc699a4e 100644
--- a/packages/octez-protocol-007-PsDELPH1-libs/octez-protocol-007-PsDELPH1-libs.21.0/opam
+++ b/packages/octez-protocol-007-PsDELPH1-libs/octez-protocol-007-PsDELPH1-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-008-PtEdo2Zk-libs/octez-protocol-008-PtEdo2Zk-libs.21.0/opam b/packages/octez-protocol-008-PtEdo2Zk-libs/octez-protocol-008-PtEdo2Zk-libs.21.0/opam
index f409d309a14..13b27c07984 100644
--- a/packages/octez-protocol-008-PtEdo2Zk-libs/octez-protocol-008-PtEdo2Zk-libs.21.0/opam
+++ b/packages/octez-protocol-008-PtEdo2Zk-libs/octez-protocol-008-PtEdo2Zk-libs.21.0/opam
@@ -30,3 +30,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-009-PsFLoren-libs/octez-protocol-009-PsFLoren-libs.21.0/opam b/packages/octez-protocol-009-PsFLoren-libs/octez-protocol-009-PsFLoren-libs.21.0/opam
index d31e5dc847c..c9336ded0d4 100644
--- a/packages/octez-protocol-009-PsFLoren-libs/octez-protocol-009-PsFLoren-libs.21.0/opam
+++ b/packages/octez-protocol-009-PsFLoren-libs/octez-protocol-009-PsFLoren-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-010-PtGRANAD-libs/octez-protocol-010-PtGRANAD-libs.21.0/opam b/packages/octez-protocol-010-PtGRANAD-libs/octez-protocol-010-PtGRANAD-libs.21.0/opam
index 49c7da04486..fff379a40e8 100644
--- a/packages/octez-protocol-010-PtGRANAD-libs/octez-protocol-010-PtGRANAD-libs.21.0/opam
+++ b/packages/octez-protocol-010-PtGRANAD-libs/octez-protocol-010-PtGRANAD-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-011-PtHangz2-libs/octez-protocol-011-PtHangz2-libs.21.0/opam b/packages/octez-protocol-011-PtHangz2-libs/octez-protocol-011-PtHangz2-libs.21.0/opam
index 3d5c1110370..8ac28848cee 100644
--- a/packages/octez-protocol-011-PtHangz2-libs/octez-protocol-011-PtHangz2-libs.21.0/opam
+++ b/packages/octez-protocol-011-PtHangz2-libs/octez-protocol-011-PtHangz2-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-012-Psithaca-libs/octez-protocol-012-Psithaca-libs.21.0/opam b/packages/octez-protocol-012-Psithaca-libs/octez-protocol-012-Psithaca-libs.21.0/opam
index 1418aa38818..26c01e27564 100644
--- a/packages/octez-protocol-012-Psithaca-libs/octez-protocol-012-Psithaca-libs.21.0/opam
+++ b/packages/octez-protocol-012-Psithaca-libs/octez-protocol-012-Psithaca-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-013-PtJakart-libs/octez-protocol-013-PtJakart-libs.21.0/opam b/packages/octez-protocol-013-PtJakart-libs/octez-protocol-013-PtJakart-libs.21.0/opam
index 75c6494cb2b..6d6dcaffe50 100644
--- a/packages/octez-protocol-013-PtJakart-libs/octez-protocol-013-PtJakart-libs.21.0/opam
+++ b/packages/octez-protocol-013-PtJakart-libs/octez-protocol-013-PtJakart-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-014-PtKathma-libs/octez-protocol-014-PtKathma-libs.21.0/opam b/packages/octez-protocol-014-PtKathma-libs/octez-protocol-014-PtKathma-libs.21.0/opam
index c45b727abaf..fe67e68de27 100644
--- a/packages/octez-protocol-014-PtKathma-libs/octez-protocol-014-PtKathma-libs.21.0/opam
+++ b/packages/octez-protocol-014-PtKathma-libs/octez-protocol-014-PtKathma-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-015-PtLimaPt-libs/octez-protocol-015-PtLimaPt-libs.21.0/opam b/packages/octez-protocol-015-PtLimaPt-libs/octez-protocol-015-PtLimaPt-libs.21.0/opam
index fc2ffb4dff8..1feb61a2467 100644
--- a/packages/octez-protocol-015-PtLimaPt-libs/octez-protocol-015-PtLimaPt-libs.21.0/opam
+++ b/packages/octez-protocol-015-PtLimaPt-libs/octez-protocol-015-PtLimaPt-libs.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-016-PtMumbai-libs/octez-protocol-016-PtMumbai-libs.21.0/opam b/packages/octez-protocol-016-PtMumbai-libs/octez-protocol-016-PtMumbai-libs.21.0/opam
index af5dc4441dd..04fc35d7bbc 100644
--- a/packages/octez-protocol-016-PtMumbai-libs/octez-protocol-016-PtMumbai-libs.21.0/opam
+++ b/packages/octez-protocol-016-PtMumbai-libs/octez-protocol-016-PtMumbai-libs.21.0/opam
@@ -33,3 +33,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-017-PtNairob-libs/octez-protocol-017-PtNairob-libs.21.0/opam b/packages/octez-protocol-017-PtNairob-libs/octez-protocol-017-PtNairob-libs.21.0/opam
index 3fadfa58dfd..157f3ea1646 100644
--- a/packages/octez-protocol-017-PtNairob-libs/octez-protocol-017-PtNairob-libs.21.0/opam
+++ b/packages/octez-protocol-017-PtNairob-libs/octez-protocol-017-PtNairob-libs.21.0/opam
@@ -33,3 +33,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-018-Proxford-libs/octez-protocol-018-Proxford-libs.21.0/opam b/packages/octez-protocol-018-Proxford-libs/octez-protocol-018-Proxford-libs.21.0/opam
index c69e5e9622e..7d9e06f853d 100644
--- a/packages/octez-protocol-018-Proxford-libs/octez-protocol-018-Proxford-libs.21.0/opam
+++ b/packages/octez-protocol-018-Proxford-libs/octez-protocol-018-Proxford-libs.21.0/opam
@@ -33,3 +33,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-019-PtParisB-libs/octez-protocol-019-PtParisB-libs.21.0/opam b/packages/octez-protocol-019-PtParisB-libs/octez-protocol-019-PtParisB-libs.21.0/opam
index 13b08980bd7..74032f2a2e9 100644
--- a/packages/octez-protocol-019-PtParisB-libs/octez-protocol-019-PtParisB-libs.21.0/opam
+++ b/packages/octez-protocol-019-PtParisB-libs/octez-protocol-019-PtParisB-libs.21.0/opam
@@ -33,3 +33,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-protocol-020-PsParisC-libs/octez-protocol-020-PsParisC-libs.21.0/opam b/packages/octez-protocol-020-PsParisC-libs/octez-protocol-020-PsParisC-libs.21.0/opam
index 40e916c3d19..821c7b85baf 100644
--- a/packages/octez-protocol-020-PsParisC-libs/octez-protocol-020-PsParisC-libs.21.0/opam
+++ b/packages/octez-protocol-020-PsParisC-libs/octez-protocol-020-PsParisC-libs.21.0/opam
@@ -45,3 +45,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-protocol-021-PsQuebec-libs/octez-protocol-021-PsQuebec-libs.21.0/opam b/packages/octez-protocol-021-PsQuebec-libs/octez-protocol-021-PsQuebec-libs.21.0/opam
index a16d9476eb6..04ee824ad85 100644
--- a/packages/octez-protocol-021-PsQuebec-libs/octez-protocol-021-PsQuebec-libs.21.0/opam
+++ b/packages/octez-protocol-021-PsQuebec-libs/octez-protocol-021-PsQuebec-libs.21.0/opam
@@ -45,3 +45,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-protocol-alpha-libs/octez-protocol-alpha-libs.21.0/opam b/packages/octez-protocol-alpha-libs/octez-protocol-alpha-libs.21.0/opam
index 512d8c2300a..98c8f24c43f 100644
--- a/packages/octez-protocol-alpha-libs/octez-protocol-alpha-libs.21.0/opam
+++ b/packages/octez-protocol-alpha-libs/octez-protocol-alpha-libs.21.0/opam
@@ -45,3 +45,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-protocol-compiler/octez-protocol-compiler.21.0/opam b/packages/octez-protocol-compiler/octez-protocol-compiler.21.0/opam
index 7ba9fe22e62..918ebdf12a0 100644
--- a/packages/octez-protocol-compiler/octez-protocol-compiler.21.0/opam
+++ b/packages/octez-protocol-compiler/octez-protocol-compiler.21.0/opam
@@ -31,3 +31,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-riscv-api/octez-riscv-api.21.0/opam b/packages/octez-riscv-api/octez-riscv-api.21.0/opam
index ce738fa202f..d0943a68ab7 100644
--- a/packages/octez-riscv-api/octez-riscv-api.21.0/opam
+++ b/packages/octez-riscv-api/octez-riscv-api.21.0/opam
@@ -26,3 +26,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-riscv-pvm/octez-riscv-pvm.21.0/opam b/packages/octez-riscv-pvm/octez-riscv-pvm.21.0/opam
index 8c74e9ae8db..11221d64271 100644
--- a/packages/octez-riscv-pvm/octez-riscv-pvm.21.0/opam
+++ b/packages/octez-riscv-pvm/octez-riscv-pvm.21.0/opam
@@ -27,3 +27,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-rpc-process/octez-rpc-process.21.0/opam b/packages/octez-rpc-process/octez-rpc-process.21.0/opam
index 76b30de0880..d22052c1018 100644
--- a/packages/octez-rpc-process/octez-rpc-process.21.0/opam
+++ b/packages/octez-rpc-process/octez-rpc-process.21.0/opam
@@ -30,3 +30,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-rust-deps/octez-rust-deps.21.0/opam b/packages/octez-rust-deps/octez-rust-deps.21.0/opam
index c61c8a12ac8..61101aed3be 100644
--- a/packages/octez-rust-deps/octez-rust-deps.21.0/opam
+++ b/packages/octez-rust-deps/octez-rust-deps.21.0/opam
@@ -25,3 +25,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-shell-libs/octez-shell-libs.21.0/opam b/packages/octez-shell-libs/octez-shell-libs.21.0/opam
index 576e612aec6..02e00247972 100644
--- a/packages/octez-shell-libs/octez-shell-libs.21.0/opam
+++ b/packages/octez-shell-libs/octez-shell-libs.21.0/opam
@@ -56,3 +56,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-signer/octez-signer.21.0/opam b/packages/octez-signer/octez-signer.21.0/opam
index dfe07e183a1..f24f3ebbe75 100644
--- a/packages/octez-signer/octez-signer.21.0/opam
+++ b/packages/octez-signer/octez-signer.21.0/opam
@@ -27,3 +27,4 @@ url {
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+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-Proxford/octez-smart-rollup-node-Proxford.21.0/opam b/packages/octez-smart-rollup-node-Proxford/octez-smart-rollup-node-Proxford.21.0/opam
index 8614ea328d2..b6b7a0d2672 100644
--- a/packages/octez-smart-rollup-node-Proxford/octez-smart-rollup-node-Proxford.21.0/opam
+++ b/packages/octez-smart-rollup-node-Proxford/octez-smart-rollup-node-Proxford.21.0/opam
@@ -42,3 +42,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-PsParisC/octez-smart-rollup-node-PsParisC.21.0/opam b/packages/octez-smart-rollup-node-PsParisC/octez-smart-rollup-node-PsParisC.21.0/opam
index 3052e99d28c..4dbbaa62a11 100644
--- a/packages/octez-smart-rollup-node-PsParisC/octez-smart-rollup-node-PsParisC.21.0/opam
+++ b/packages/octez-smart-rollup-node-PsParisC/octez-smart-rollup-node-PsParisC.21.0/opam
@@ -42,3 +42,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-PsQuebec/octez-smart-rollup-node-PsQuebec.21.0/opam b/packages/octez-smart-rollup-node-PsQuebec/octez-smart-rollup-node-PsQuebec.21.0/opam
index 3bca6317a26..31ee9163dc2 100644
--- a/packages/octez-smart-rollup-node-PsQuebec/octez-smart-rollup-node-PsQuebec.21.0/opam
+++ b/packages/octez-smart-rollup-node-PsQuebec/octez-smart-rollup-node-PsQuebec.21.0/opam
@@ -43,3 +43,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-PtNairob/octez-smart-rollup-node-PtNairob.21.0/opam b/packages/octez-smart-rollup-node-PtNairob/octez-smart-rollup-node-PtNairob.21.0/opam
index c3f1a2d0ade..09610f48ad3 100644
--- a/packages/octez-smart-rollup-node-PtNairob/octez-smart-rollup-node-PtNairob.21.0/opam
+++ b/packages/octez-smart-rollup-node-PtNairob/octez-smart-rollup-node-PtNairob.21.0/opam
@@ -41,3 +41,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-PtParisB/octez-smart-rollup-node-PtParisB.21.0/opam b/packages/octez-smart-rollup-node-PtParisB/octez-smart-rollup-node-PtParisB.21.0/opam
index 04d85e77952..591d56ea241 100644
--- a/packages/octez-smart-rollup-node-PtParisB/octez-smart-rollup-node-PtParisB.21.0/opam
+++ b/packages/octez-smart-rollup-node-PtParisB/octez-smart-rollup-node-PtParisB.21.0/opam
@@ -42,3 +42,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-alpha/octez-smart-rollup-node-alpha.21.0/opam b/packages/octez-smart-rollup-node-alpha/octez-smart-rollup-node-alpha.21.0/opam
index d3d483609ad..1f96b5a55e1 100644
--- a/packages/octez-smart-rollup-node-alpha/octez-smart-rollup-node-alpha.21.0/opam
+++ b/packages/octez-smart-rollup-node-alpha/octez-smart-rollup-node-alpha.21.0/opam
@@ -43,3 +43,4 @@ url {
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   ]
 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node-lib/octez-smart-rollup-node-lib.21.0/opam b/packages/octez-smart-rollup-node-lib/octez-smart-rollup-node-lib.21.0/opam
index 3a6a619d2bd..7105bba3c36 100644
--- a/packages/octez-smart-rollup-node-lib/octez-smart-rollup-node-lib.21.0/opam
+++ b/packages/octez-smart-rollup-node-lib/octez-smart-rollup-node-lib.21.0/opam
@@ -36,3 +36,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-node/octez-smart-rollup-node.21.0/opam b/packages/octez-smart-rollup-node/octez-smart-rollup-node.21.0/opam
index 9e805b579a0..5b339024276 100644
--- a/packages/octez-smart-rollup-node/octez-smart-rollup-node.21.0/opam
+++ b/packages/octez-smart-rollup-node/octez-smart-rollup-node.21.0/opam
@@ -41,3 +41,4 @@ url {
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 }
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-wasm-debugger-lib/octez-smart-rollup-wasm-debugger-lib.21.0/opam b/packages/octez-smart-rollup-wasm-debugger-lib/octez-smart-rollup-wasm-debugger-lib.21.0/opam
index 2e4c800cbbd..954e5522891 100644
--- a/packages/octez-smart-rollup-wasm-debugger-lib/octez-smart-rollup-wasm-debugger-lib.21.0/opam
+++ b/packages/octez-smart-rollup-wasm-debugger-lib/octez-smart-rollup-wasm-debugger-lib.21.0/opam
@@ -31,3 +31,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-wasm-debugger-plugin/octez-smart-rollup-wasm-debugger-plugin.21.0/opam b/packages/octez-smart-rollup-wasm-debugger-plugin/octez-smart-rollup-wasm-debugger-plugin.21.0/opam
index 7a9bb83834b..51d4730fa1b 100644
--- a/packages/octez-smart-rollup-wasm-debugger-plugin/octez-smart-rollup-wasm-debugger-plugin.21.0/opam
+++ b/packages/octez-smart-rollup-wasm-debugger-plugin/octez-smart-rollup-wasm-debugger-plugin.21.0/opam
@@ -25,3 +25,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-smart-rollup-wasm-debugger/octez-smart-rollup-wasm-debugger.21.0/opam b/packages/octez-smart-rollup-wasm-debugger/octez-smart-rollup-wasm-debugger.21.0/opam
index 35f6f7196d0..5cb880e34ec 100644
--- a/packages/octez-smart-rollup-wasm-debugger/octez-smart-rollup-wasm-debugger.21.0/opam
+++ b/packages/octez-smart-rollup-wasm-debugger/octez-smart-rollup-wasm-debugger.21.0/opam
@@ -26,3 +26,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/octez-version/octez-version.21.0/opam b/packages/octez-version/octez-version.21.0/opam
index 2290561d046..ae70e32af28 100644
--- a/packages/octez-version/octez-version.21.0/opam
+++ b/packages/octez-version/octez-version.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-benchmark/tezos-benchmark.21.0/opam b/packages/tezos-benchmark/tezos-benchmark.21.0/opam
index 3ee04d67f79..434135888fd 100644
--- a/packages/tezos-benchmark/tezos-benchmark.21.0/opam
+++ b/packages/tezos-benchmark/tezos-benchmark.21.0/opam
@@ -29,3 +29,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-client-demo-counter/tezos-client-demo-counter.21.0/opam b/packages/tezos-client-demo-counter/tezos-client-demo-counter.21.0/opam
index 1f0f5491f1a..aae8e6dee5e 100644
--- a/packages/tezos-client-demo-counter/tezos-client-demo-counter.21.0/opam
+++ b/packages/tezos-client-demo-counter/tezos-client-demo-counter.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-client-genesis/tezos-client-genesis.21.0/opam b/packages/tezos-client-genesis/tezos-client-genesis.21.0/opam
index d9e7144fac1..19a2dcb494a 100644
--- a/packages/tezos-client-genesis/tezos-client-genesis.21.0/opam
+++ b/packages/tezos-client-genesis/tezos-client-genesis.21.0/opam
@@ -29,3 +29,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-dac-client-lib/tezos-dac-client-lib.21.0/opam b/packages/tezos-dac-client-lib/tezos-dac-client-lib.21.0/opam
index 377fc6707e6..78a42e86618 100644
--- a/packages/tezos-dac-client-lib/tezos-dac-client-lib.21.0/opam
+++ b/packages/tezos-dac-client-lib/tezos-dac-client-lib.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-dac-lib/tezos-dac-lib.21.0/opam b/packages/tezos-dac-lib/tezos-dac-lib.21.0/opam
index 02a444b9aa5..83c13668975 100644
--- a/packages/tezos-dac-lib/tezos-dac-lib.21.0/opam
+++ b/packages/tezos-dac-lib/tezos-dac-lib.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-dac-node-lib/tezos-dac-node-lib.21.0/opam b/packages/tezos-dac-node-lib/tezos-dac-node-lib.21.0/opam
index 8b9477dfa28..7b4d98f9ca4 100644
--- a/packages/tezos-dac-node-lib/tezos-dac-node-lib.21.0/opam
+++ b/packages/tezos-dac-node-lib/tezos-dac-node-lib.21.0/opam
@@ -30,3 +30,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-dal-node-lib/tezos-dal-node-lib.21.0/opam b/packages/tezos-dal-node-lib/tezos-dal-node-lib.21.0/opam
index 1d9d82aea50..47dc5e8288c 100644
--- a/packages/tezos-dal-node-lib/tezos-dal-node-lib.21.0/opam
+++ b/packages/tezos-dal-node-lib/tezos-dal-node-lib.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-dal-node-services/tezos-dal-node-services.21.0/opam b/packages/tezos-dal-node-services/tezos-dal-node-services.21.0/opam
index fefb96855d5..145e9f6a29b 100644
--- a/packages/tezos-dal-node-services/tezos-dal-node-services.21.0/opam
+++ b/packages/tezos-dal-node-services/tezos-dal-node-services.21.0/opam
@@ -26,3 +26,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-openapi/tezos-openapi.21.0/opam b/packages/tezos-openapi/tezos-openapi.21.0/opam
index abc738a4ae8..9b59be33ec8 100644
--- a/packages/tezos-openapi/tezos-openapi.21.0/opam
+++ b/packages/tezos-openapi/tezos-openapi.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-000-Ps9mPmXa/tezos-protocol-000-Ps9mPmXa.21.0/opam b/packages/tezos-protocol-000-Ps9mPmXa/tezos-protocol-000-Ps9mPmXa.21.0/opam
index 82bf41d8b2f..c4b6f136a92 100644
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+++ b/packages/tezos-protocol-000-Ps9mPmXa/tezos-protocol-000-Ps9mPmXa.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-001-PtCJ7pwo/tezos-protocol-001-PtCJ7pwo.21.0/opam b/packages/tezos-protocol-001-PtCJ7pwo/tezos-protocol-001-PtCJ7pwo.21.0/opam
index 63e1ea1777b..18b441f9898 100644
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@@ -27,3 +27,4 @@ url {
 conflicts: [
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-002-PsYLVpVv/tezos-protocol-002-PsYLVpVv.21.0/opam b/packages/tezos-protocol-002-PsYLVpVv/tezos-protocol-002-PsYLVpVv.21.0/opam
index 08d175c3d50..95f6347ccff 100644
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@@ -27,3 +27,4 @@ url {
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 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-003-PsddFKi3/tezos-protocol-003-PsddFKi3.21.0/opam b/packages/tezos-protocol-003-PsddFKi3/tezos-protocol-003-PsddFKi3.21.0/opam
index df2060c3494..839ff9c1ee3 100644
--- a/packages/tezos-protocol-003-PsddFKi3/tezos-protocol-003-PsddFKi3.21.0/opam
+++ b/packages/tezos-protocol-003-PsddFKi3/tezos-protocol-003-PsddFKi3.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-004-Pt24m4xi/tezos-protocol-004-Pt24m4xi.21.0/opam b/packages/tezos-protocol-004-Pt24m4xi/tezos-protocol-004-Pt24m4xi.21.0/opam
index 9ddb9cf5e31..43f54343280 100644
--- a/packages/tezos-protocol-004-Pt24m4xi/tezos-protocol-004-Pt24m4xi.21.0/opam
+++ b/packages/tezos-protocol-004-Pt24m4xi/tezos-protocol-004-Pt24m4xi.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-005-PsBABY5H/tezos-protocol-005-PsBABY5H.21.0/opam b/packages/tezos-protocol-005-PsBABY5H/tezos-protocol-005-PsBABY5H.21.0/opam
index 7c4e2e13abe..e3479c88ff5 100644
--- a/packages/tezos-protocol-005-PsBABY5H/tezos-protocol-005-PsBABY5H.21.0/opam
+++ b/packages/tezos-protocol-005-PsBABY5H/tezos-protocol-005-PsBABY5H.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-005-PsBabyM1/tezos-protocol-005-PsBabyM1.21.0/opam b/packages/tezos-protocol-005-PsBabyM1/tezos-protocol-005-PsBabyM1.21.0/opam
index 116109da5e1..92ae5e8ddd6 100644
--- a/packages/tezos-protocol-005-PsBabyM1/tezos-protocol-005-PsBabyM1.21.0/opam
+++ b/packages/tezos-protocol-005-PsBabyM1/tezos-protocol-005-PsBabyM1.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-006-PsCARTHA/tezos-protocol-006-PsCARTHA.21.0/opam b/packages/tezos-protocol-006-PsCARTHA/tezos-protocol-006-PsCARTHA.21.0/opam
index 1eea42663ba..c3df1307a25 100644
--- a/packages/tezos-protocol-006-PsCARTHA/tezos-protocol-006-PsCARTHA.21.0/opam
+++ b/packages/tezos-protocol-006-PsCARTHA/tezos-protocol-006-PsCARTHA.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-007-PsDELPH1/tezos-protocol-007-PsDELPH1.21.0/opam b/packages/tezos-protocol-007-PsDELPH1/tezos-protocol-007-PsDELPH1.21.0/opam
index 891eebd7afc..1e41f54ecc9 100644
--- a/packages/tezos-protocol-007-PsDELPH1/tezos-protocol-007-PsDELPH1.21.0/opam
+++ b/packages/tezos-protocol-007-PsDELPH1/tezos-protocol-007-PsDELPH1.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-008-PtEdo2Zk/tezos-protocol-008-PtEdo2Zk.21.0/opam b/packages/tezos-protocol-008-PtEdo2Zk/tezos-protocol-008-PtEdo2Zk.21.0/opam
index e0f6c9e8bd2..52115eed879 100644
--- a/packages/tezos-protocol-008-PtEdo2Zk/tezos-protocol-008-PtEdo2Zk.21.0/opam
+++ b/packages/tezos-protocol-008-PtEdo2Zk/tezos-protocol-008-PtEdo2Zk.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-008-PtEdoTez/tezos-protocol-008-PtEdoTez.21.0/opam b/packages/tezos-protocol-008-PtEdoTez/tezos-protocol-008-PtEdoTez.21.0/opam
index 60fdec94f7b..bae007bdb97 100644
--- a/packages/tezos-protocol-008-PtEdoTez/tezos-protocol-008-PtEdoTez.21.0/opam
+++ b/packages/tezos-protocol-008-PtEdoTez/tezos-protocol-008-PtEdoTez.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-009-PsFLoren/tezos-protocol-009-PsFLoren.21.0/opam b/packages/tezos-protocol-009-PsFLoren/tezos-protocol-009-PsFLoren.21.0/opam
index 753f60b1e98..fc5f1fe8224 100644
--- a/packages/tezos-protocol-009-PsFLoren/tezos-protocol-009-PsFLoren.21.0/opam
+++ b/packages/tezos-protocol-009-PsFLoren/tezos-protocol-009-PsFLoren.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-010-PtGRANAD/tezos-protocol-010-PtGRANAD.21.0/opam b/packages/tezos-protocol-010-PtGRANAD/tezos-protocol-010-PtGRANAD.21.0/opam
index cd5626932e3..b4d66cb220a 100644
--- a/packages/tezos-protocol-010-PtGRANAD/tezos-protocol-010-PtGRANAD.21.0/opam
+++ b/packages/tezos-protocol-010-PtGRANAD/tezos-protocol-010-PtGRANAD.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-011-PtHangz2/tezos-protocol-011-PtHangz2.21.0/opam b/packages/tezos-protocol-011-PtHangz2/tezos-protocol-011-PtHangz2.21.0/opam
index 32649383d1a..6cc94d151c7 100644
--- a/packages/tezos-protocol-011-PtHangz2/tezos-protocol-011-PtHangz2.21.0/opam
+++ b/packages/tezos-protocol-011-PtHangz2/tezos-protocol-011-PtHangz2.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-012-Psithaca/tezos-protocol-012-Psithaca.21.0/opam b/packages/tezos-protocol-012-Psithaca/tezos-protocol-012-Psithaca.21.0/opam
index c2ffc02b2cd..513a9814fde 100644
--- a/packages/tezos-protocol-012-Psithaca/tezos-protocol-012-Psithaca.21.0/opam
+++ b/packages/tezos-protocol-012-Psithaca/tezos-protocol-012-Psithaca.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-013-PtJakart/tezos-protocol-013-PtJakart.21.0/opam b/packages/tezos-protocol-013-PtJakart/tezos-protocol-013-PtJakart.21.0/opam
index 2fc9e47ee56..e4ff72392ec 100644
--- a/packages/tezos-protocol-013-PtJakart/tezos-protocol-013-PtJakart.21.0/opam
+++ b/packages/tezos-protocol-013-PtJakart/tezos-protocol-013-PtJakart.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-014-PtKathma/tezos-protocol-014-PtKathma.21.0/opam b/packages/tezos-protocol-014-PtKathma/tezos-protocol-014-PtKathma.21.0/opam
index 97a4eca1073..c661843237d 100644
--- a/packages/tezos-protocol-014-PtKathma/tezos-protocol-014-PtKathma.21.0/opam
+++ b/packages/tezos-protocol-014-PtKathma/tezos-protocol-014-PtKathma.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-015-PtLimaPt/tezos-protocol-015-PtLimaPt.21.0/opam b/packages/tezos-protocol-015-PtLimaPt/tezos-protocol-015-PtLimaPt.21.0/opam
index dd7d3e5fbc3..42ee5c20108 100644
--- a/packages/tezos-protocol-015-PtLimaPt/tezos-protocol-015-PtLimaPt.21.0/opam
+++ b/packages/tezos-protocol-015-PtLimaPt/tezos-protocol-015-PtLimaPt.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-016-PtMumbai/tezos-protocol-016-PtMumbai.21.0/opam b/packages/tezos-protocol-016-PtMumbai/tezos-protocol-016-PtMumbai.21.0/opam
index 48b22a8db96..c8e0e9d6420 100644
--- a/packages/tezos-protocol-016-PtMumbai/tezos-protocol-016-PtMumbai.21.0/opam
+++ b/packages/tezos-protocol-016-PtMumbai/tezos-protocol-016-PtMumbai.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-017-PtNairob/tezos-protocol-017-PtNairob.21.0/opam b/packages/tezos-protocol-017-PtNairob/tezos-protocol-017-PtNairob.21.0/opam
index dd8d8c438d5..9f19e1e180d 100644
--- a/packages/tezos-protocol-017-PtNairob/tezos-protocol-017-PtNairob.21.0/opam
+++ b/packages/tezos-protocol-017-PtNairob/tezos-protocol-017-PtNairob.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-018-Proxford/tezos-protocol-018-Proxford.21.0/opam b/packages/tezos-protocol-018-Proxford/tezos-protocol-018-Proxford.21.0/opam
index 3f22ce5e12d..5ec970c97be 100644
--- a/packages/tezos-protocol-018-Proxford/tezos-protocol-018-Proxford.21.0/opam
+++ b/packages/tezos-protocol-018-Proxford/tezos-protocol-018-Proxford.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-019-PtParisB/tezos-protocol-019-PtParisB.21.0/opam b/packages/tezos-protocol-019-PtParisB/tezos-protocol-019-PtParisB.21.0/opam
index 2b87807140a..19ab967b829 100644
--- a/packages/tezos-protocol-019-PtParisB/tezos-protocol-019-PtParisB.21.0/opam
+++ b/packages/tezos-protocol-019-PtParisB/tezos-protocol-019-PtParisB.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-020-PsParisC/tezos-protocol-020-PsParisC.21.0/opam b/packages/tezos-protocol-020-PsParisC/tezos-protocol-020-PsParisC.21.0/opam
index 44bbb1338f8..614f72c36e1 100644
--- a/packages/tezos-protocol-020-PsParisC/tezos-protocol-020-PsParisC.21.0/opam
+++ b/packages/tezos-protocol-020-PsParisC/tezos-protocol-020-PsParisC.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-021-PsQuebec/tezos-protocol-021-PsQuebec.21.0/opam b/packages/tezos-protocol-021-PsQuebec/tezos-protocol-021-PsQuebec.21.0/opam
index c5994669d78..91cd7f38195 100644
--- a/packages/tezos-protocol-021-PsQuebec/tezos-protocol-021-PsQuebec.21.0/opam
+++ b/packages/tezos-protocol-021-PsQuebec/tezos-protocol-021-PsQuebec.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-alpha/tezos-protocol-alpha.21.0/opam b/packages/tezos-protocol-alpha/tezos-protocol-alpha.21.0/opam
index 7a6b25ed2ae..08f8157ef78 100644
--- a/packages/tezos-protocol-alpha/tezos-protocol-alpha.21.0/opam
+++ b/packages/tezos-protocol-alpha/tezos-protocol-alpha.21.0/opam
@@ -28,3 +28,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-demo-counter/tezos-protocol-demo-counter.21.0/opam b/packages/tezos-protocol-demo-counter/tezos-protocol-demo-counter.21.0/opam
index 096bf871dd3..d4d9575c828 100644
--- a/packages/tezos-protocol-demo-counter/tezos-protocol-demo-counter.21.0/opam
+++ b/packages/tezos-protocol-demo-counter/tezos-protocol-demo-counter.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-demo-noops/tezos-protocol-demo-noops.21.0/opam b/packages/tezos-protocol-demo-noops/tezos-protocol-demo-noops.21.0/opam
index c5d436acc29..ced0758415b 100644
--- a/packages/tezos-protocol-demo-noops/tezos-protocol-demo-noops.21.0/opam
+++ b/packages/tezos-protocol-demo-noops/tezos-protocol-demo-noops.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"
diff --git a/packages/tezos-protocol-genesis/tezos-protocol-genesis.21.0/opam b/packages/tezos-protocol-genesis/tezos-protocol-genesis.21.0/opam
index d4106505f17..d6f506d3cc6 100644
--- a/packages/tezos-protocol-genesis/tezos-protocol-genesis.21.0/opam
+++ b/packages/tezos-protocol-genesis/tezos-protocol-genesis.21.0/opam
@@ -27,3 +27,4 @@ url {
 conflicts: [
   "stdcompat" {< "19"}
 ]
+available: os-family != "windows"