format c_

Pegasust 2023-02-05 17:08:36 -07:00
parent 00e7a15b19
commit 29e5db764d
1 changed files with 106 additions and 95 deletions

151
c_.nix
View File

@ -1,100 +1,111 @@
# a small helper that only builds on top of builtins functions # a small helper that only builds on top of builtins functions
{src}@inputs: { src }@inputs:
builtins // (let builtins // (
formatSecondsSinceEpoch = t: let
let formatSecondsSinceEpoch = t:
rem = x: y: x - x / y * y; let
days = t / 86400; rem = x: y: x - x / y * y;
secondsInDay = rem t 86400; days = t / 86400;
hours = secondsInDay / 3600; secondsInDay = rem t 86400;
minutes = (rem secondsInDay 3600) / 60; hours = secondsInDay / 3600;
seconds = rem t 60; minutes = (rem secondsInDay 3600) / 60;
seconds = rem t 60;
# Courtesy of https://stackoverflow.com/a/32158604. # Courtesy of https://stackoverflow.com/a/32158604.
z = days + 719468; z = days + 719468;
era = (if z >= 0 then z else z - 146096) / 146097; era = (if z >= 0 then z else z - 146096) / 146097;
doe = z - era * 146097; doe = z - era * 146097;
yoe = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365; yoe = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365;
y = yoe + era * 400; y = yoe + era * 400;
doy = doe - (365 * yoe + yoe / 4 - yoe / 100); doy = doe - (365 * yoe + yoe / 4 - yoe / 100);
mp = (5 * doy + 2) / 153; mp = (5 * doy + 2) / 153;
d = doy - (153 * mp + 2) / 5 + 1; d = doy - (153 * mp + 2) / 5 + 1;
m = mp + (if mp < 10 then 3 else -9); m = mp + (if mp < 10 then 3 else -9);
y' = y + (if m <= 2 then 1 else 0); y' = y + (if m <= 2 then 1 else 0);
pad = s: if builtins.stringLength s < 2 then "0" + s else s; pad = s: if builtins.stringLength s < 2 then "0" + s else s;
in "${toString y'}${pad (toString m)}${pad (toString d)}${pad (toString hours)}" in
+ "${pad (toString minutes)}${pad (toString seconds)}"; "${toString y'}${pad (toString m)}${pad (toString d)}${pad (toString hours)}"
+ "${pad (toString minutes)}${pad (toString seconds)}";
fetchTree = fetchTree =
# this is the value of flake.lock#lock.nodes.${input_name}.locked # this is the value of flake.lock#lock.nodes.${input_name}.locked
{type { type
, host? "" , host ? ""
, owner? "" , owner ? ""
, repo? "" , repo ? ""
, rev? "" , rev ? ""
, submodules? "" , submodules ? ""
, path? "" , path ? ""
, narHash? null , narHash ? null
, lastModified? 0 , lastModified ? 0
}@info: }@info:
if info.type == "github" then if info.type == "github" then
{ outPath = {
outPath =
fetchTarball fetchTarball
({ url = "https://api.${info.host or "github.com"}/repos/" ({
+ "${info.owner}/${info.repo}/tarball/${info.rev}"; } url = "https://api.${info.host or "github.com"}/repos/"
// (if info ? narHash then { sha256 = info.narHash; } else {}) + "${info.owner}/${info.repo}/tarball/${info.rev}";
}
// (if info ? narHash then { sha256 = info.narHash; } else { })
); );
rev = info.rev; rev = info.rev;
shortRev = builtins.substring 0 7 info.rev; shortRev = builtins.substring 0 7 info.rev;
lastModified = info.lastModified; lastModified = info.lastModified;
lastModifiedDate = formatSecondsSinceEpoch info.lastModified; lastModifiedDate = formatSecondsSinceEpoch info.lastModified;
narHash = info.narHash; narHash = info.narHash;
} }
else if info.type == "git" then else if info.type == "git" then
{ outPath = {
outPath =
builtins.fetchGit builtins.fetchGit
({ url = info.url; } ({ url = info.url; }
// (if info ? rev then { inherit (info) rev; } else {}) // (if info ? rev then { inherit (info) rev; } else { })
// (if info ? ref then { inherit (info) ref; } else {}) // (if info ? ref then { inherit (info) ref; } else { })
// (if info ? submodules then { inherit (info) submodules; } else {}) // (if info ? submodules then { inherit (info) submodules; } else { })
); );
lastModified = info.lastModified; lastModified = info.lastModified;
lastModifiedDate = formatSecondsSinceEpoch info.lastModified; lastModifiedDate = formatSecondsSinceEpoch info.lastModified;
narHash = info.narHash; narHash = info.narHash;
} // (if info ? rev then { } // (if info ? rev then {
rev = info.rev; rev = info.rev;
shortRev = builtins.substring 0 7 info.rev; shortRev = builtins.substring 0 7 info.rev;
} else { } else { })
}) else if info.type == "path" then
else if info.type == "path" then {
{ outPath = builtins.path { outPath = builtins.path {
path = if builtins.substring 0 1 info.path != "/" path =
if builtins.substring 0 1 info.path != "/"
then src + ("/" + info.path) # make this absolute path by prepending ./ then src + ("/" + info.path) # make this absolute path by prepending ./
else info.path; # it's already an absolute path else info.path; # it's already an absolute path
}; };
narHash = info.narHash; narHash = info.narHash;
} }
else if info.type == "tarball" then else if info.type == "tarball" then
{ outPath = {
outPath =
fetchTarball fetchTarball
({ inherit (info) url; } ({ inherit (info) url; }
// (if info ? narHash then { sha256 = info.narHash; } else {}) // (if info ? narHash then { sha256 = info.narHash; } else { })
); );
} }
else if info.type == "gitlab" then else if info.type == "gitlab" then
{ inherit (info) rev narHash lastModified; {
inherit (info) rev narHash lastModified;
outPath = outPath =
fetchTarball fetchTarball
({ url = "https://${info.host or "gitlab.com"}/api/v4/projects/${info.owner}%2F${info.repo}/repository/archive.tar.gz?sha=${info.rev}"; } ({ url = "https://${info.host or "gitlab.com"}/api/v4/projects/${info.owner}%2F${info.repo}/repository/archive.tar.gz?sha=${info.rev}"; }
// (if info ? narHash then { sha256 = info.narHash; } else {}) // (if info ? narHash then { sha256 = info.narHash; } else { })
); );
shortRev = builtins.substring 0 7 info.rev; shortRev = builtins.substring 0 7 info.rev;
} }
else else
# FIXME: add Mercurial, tarball inputs. # FIXME: add Mercurial, tarball inputs.
throw "flake input has unsupported input type '${info.type}'"; throw "flake input has unsupported input type '${info.type}'";
in { in
{
inherit fetchTree; inherit fetchTree;
}) }
)